[go: up one dir, main page]

EP1507880A1 - Easy-clean cooking surface and electrical household appliance comprising such a surface - Google Patents

Easy-clean cooking surface and electrical household appliance comprising such a surface

Info

Publication number
EP1507880A1
EP1507880A1 EP03756003A EP03756003A EP1507880A1 EP 1507880 A1 EP1507880 A1 EP 1507880A1 EP 03756003 A EP03756003 A EP 03756003A EP 03756003 A EP03756003 A EP 03756003A EP 1507880 A1 EP1507880 A1 EP 1507880A1
Authority
EP
European Patent Office
Prior art keywords
cooking surface
kitchen utensil
document
appliance according
cooking appliance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03756003A
Other languages
German (de)
French (fr)
Inventor
Alain Coudurier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
Original Assignee
SEB SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Priority to EP10177986.6A priority Critical patent/EP2316982A3/en
Publication of EP1507880A1 publication Critical patent/EP1507880A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/10—Amorphous alloys with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium or Hf as the major constituent
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay

Definitions

  • the present invention relates to the field of articles intended for the preparation and cooking of food and more particularly the cooking surface of these articles in contact with the food to be treated.
  • Quasi-crystals are a metallic phase or compound having, on the crystallographic level, rotation symmetries of order 5, 8, 10 or 12, like the isocahedral and decagonal phases.
  • Such coatings are in particular described in patent EP 0 356 287 and have qualities of resistance to scratching, or even of anti-adhesion in certain cases.
  • the document FR 2784280 describes a composite cooking surface consisting of two ceramic and metallic phases intended to provide non-deformability in the field of application to the bases of treated kitchen utensils, as well as good resistance to wear.
  • such coatings do not exhibit very good performance with regard to their ease of cleaning, so that the addition of a solid lubricant, such as PTFE, is often recommended when this function is sought.
  • This additional step generally entails a significant cost for the preparation of such a cooking surface.
  • the present invention aims to remedy the aforementioned drawbacks of the prior art, by providing a cooking surface with improved characteristics of scratch resistance, ease of cleaning, resistance to corrosion.
  • the present invention is achieved by a food cooking surface for a kitchen utensil or cooking appliance, characterized in that this cooking surface is made of amorphous metal alloy.
  • amorphous metallic alloys also called metallic glasses
  • metallic glasses provides interesting properties in terms of surface properties (hardness in particular), and anti-corrosion. Indeed, the absence of crystalline phase leads to the absence of defects in the crystalline solid (dislocations, grain boundaries, ...) and the phenomena induced by these defects (in particular corrosion at grain boundaries).
  • the presence of a nanocrystalline phase can be observed.
  • the nanocrystalline structure has properties similar to the amorphous structure, due to the absence of atomic order at long distance, at least as regards the characteristics sought, as previously mentioned. We could even expect a slight improvement in the heat resistance, especially with regard to its hardness.
  • the alloy has the formula A a DbE c Xd in which:
  • - A is one of the elements Zr or Cu
  • - D is at least one element chosen from the group consisting of Ni, Cu,
  • A is Zr or at least one element chosen from the group consisting of Ni, Zr, Al if A is Cu,
  • - E is at least one element chosen from the group consisting of Ti, Hf,
  • - X represents the processing impurities, with: - 40% ⁇ a ⁇ 70% at.,
  • alloys comprising at least three elements are more stable than binary alloys, and the more stable the greater the number of elements.
  • the alloys produced remain notably stable, without structural transformation, when they are brought to temperatures of the order of 300 ° C., temperatures which are higher than the temperatures commonly used for food cooking.
  • zirconium also makes it possible to further increase the thermal stability of the final alloy.
  • the metal alloy has the formulation Zr a Cu b NicAl d Ti e X f , where a, b, c, d, e, are the respective proportions of Zr, Cu, Ni, Al and Ti of the alloy, said proportions being included in the following ranges: - 40% ⁇ a ⁇ 70%
  • a + b + c + d + e + f 100% at.
  • the elements used in the composition of these alloys have been selected in particular so that the corresponding alloy has a high glass transition temperature.
  • the compositions were a priori defined to approximate the compositions corresponding to eutectics in order to decrease the temperature of the liquid, which allows lower cooling rates to obtain the amorphous state with or without the presence of nanocrystalline phase.
  • composition of the alloys was also oriented by the targeted properties of mechanical resistance, anti-corrosion and ease of cleaning of the alloy obtained.
  • the food cooking surface for kitchen utensil or cooking appliance is obtained by depositing an appropriate thickness of the metallic material on a substrate.
  • This deposition can be carried out by one or other of the following methods: thermal spraying of a powder of an adequate particle size, deposition by electrophoresis of a micro or sub-micronic powder, sputtering of a massive target.
  • the target can be obtained by assembling on a copper substrate one or more sheets or plates of material having the desired composition, said sheets or sheets being obtained either by powder sintering or thermal spraying of powder, or from of casting.
  • Other techniques, such as hot compaction or deposition by electrolysis can also be used.
  • This implementation has the advantage of using little material and being able to adjust the thickness of the cooking surface.
  • the material deposited in the processes described above can come from a powder, originally amorphous or else obtained by grinding a crystallized alloy, said powder then undergoing a vitrification step before the deposition step or during the 'deposition step, depending on the technique used. In this operating mode, the idea is therefore to obtain the amorphous phase in the very last place.
  • the food cooking surface for kitchen utensil or cooking appliance is obtained by assembling an amorphous alloy sheet with or without the presence of a nanocrystalline phase on a substrate.
  • This implementation has the advantage of approaching known implementations of metal assembly, which makes it possible to be able to adapt known techniques without significant specific development.
  • the sheet is obtained by rolling an amorphous ingot from a fusion of a mixture of metals. It is particularly advantageous, from an economic point of view, to use the melting and then rolling method, in particular in the case of amorphous materials, since they have a significant reduction rate by rolling, at controlled temperature.
  • the sheet is obtained by the wheel solidification technique.
  • This technique by solidifying the metal alloy on a cooled wheel animated by a rotational movement, makes it possible to obtain sufficiently high cooling rates for an amorphous film to be able to form.
  • the thicknesses obtained, up to 0.1 mm, are entirely compatible with the intended use, without the need for subsequent rolling.
  • the assembly of the sheet on the substrate is carried out by one of the following techniques: co-laminating, brazing, hot stamping, in a manner known per se.
  • the sheet and the substrate undergo, after assembly, a shaping step by stamping.
  • the embodiment of the invention relates to a solid substrate of amorphous alloy of composition obtained by melting in an inductive crucible a solid ingot cooled in a copper mold under conditions leading to the formation of an amorphous alloy.
  • a solid substrate of amorphous alloy of composition obtained by melting in an inductive crucible a solid ingot cooled in a copper mold under conditions leading to the formation of an amorphous alloy.
  • One face of this substrate has undergone a thorough polishing, close to the optical polish, before carrying out tests, in order to make it comparable to other cooking surfaces so that the tests for evaluating the ease of cleaning such a surface , in home cooking use, can be compared.
  • This evaluation system includes the following stages:
  • the surface is locally covered with a food mixture of known composition, this mixture is charred in an oven under defined conditions, for example 210 ° C. for 20 minutes,
  • the surface is soaked for a controlled time in a mixture of water and detergent,
  • an abrasive pad is then applied under a defined stress using an abrading device (plynometer) on the soiled surface in a reciprocating movement during a given number of cycles,
  • tests are carried out respecting the same parameters for each step of the evaluation system: same food mixture, same surface for applying the food mixture, same carbonization temperature, etc.
  • the following comparative table shows the results obtained on three surfaces of different cooking, namely a polished stainless steel, a quasi-crystal, and the amorphous alloy of formulation Zr 6 oCu ⁇ ⁇ 5 Ni ⁇ oAI 7 ⁇ 5 Ti 5 as previously described, in a severe test with a food composition based on milk and rice deemed as difficult to clean once charred. Such a test thus makes it possible to clearly highlight the differences between the quality of cleaning of the surfaces.
  • the present invention is not limited to the production of a thin layer of an amorphous metal alloy with or without the presence of a nanocrystalline phase deposited or assembled on a thick substrate, but also aims at producing solid material, with or without substrate, the latter, when present, not having a role of mechanical support for the layer, but ensuring another function, such as the thermal distribution of heat for a utensil placed on a heat source (stove, pots, ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cookers (AREA)

Abstract

The invention relates to a food cooking surface for a kitchen utensil or cooking device, characterized in that said cooking surface is either an amorphous metallic alloy or a nanocrystalline metallic alloy. According to the invention, the amorphous alloy has the formula AaDbEcXd where: A = Zr or Cu, D is at least one element selected from Ni, Cu, Al if A = Zr or at least one element selected from, Zr, Al if A = Cu, E = at least one element selected from Ti, or Hf, X = the impurities of production with 40% < a < 70% at.%, 5% < b <30% at.%, c < 10% at.%, d < 1% at.%, and a + b + c + d = 100% at.%.

Description

SURFACE DE CUISSON FACILE A NETTOYER ET ARTICLE ELECTROMENAGER COMPORTANT UNE TELLE SURFACE EASY TO CLEAN COOKING SURFACE AND HOUSEHOLD APPLIANCE HAVING SUCH A SURFACE
La présente invention concerne le domaine des articles destinés à la préparation et à la cuisson des aliments et plus particulièrement la surface de cuisson de ces articles en contact avec les aliments à traiter.The present invention relates to the field of articles intended for the preparation and cooking of food and more particularly the cooking surface of these articles in contact with the food to be treated.
Depuis de nombreuses années, des efforts importants ont été développés afin de faciliter la préparation quotidienne des repas. Parmi les progrès notables, les revêtements à base de polymères fluorocarbonés en tant que revêtement anti-adhésifs dans les ustensiles de cuisine se sont rapidement développés depuis la fin des années 1950. De tels revêtements sont mondialement connus depuis que le procédé présenté dans le brevet FR 1120749 a permis une fixation sûre de tels revêtements sur des métaux divers, tel l'aluminium.For many years, significant efforts have been developed to facilitate the daily preparation of meals. Among the notable advances, coatings based on fluorocarbon polymers as non-stick coatings in kitchen utensils have rapidly developed since the end of the 1950s. Such coatings have been known worldwide since the process presented in the patent FR 1120749 has enabled such coatings to be securely attached to various metals, such as aluminum.
Toutefois, de tels revêtements restent fragiles. Ainsi, des astuces ont été développées afin de renforcer mécaniquement la couche sur son support. De nombreux brevets de perfectionnement décrivent des méthodes et moyens permettant d'accroître la résistance aux rayures de tels revêtements, en agissant sur le revêtement et/ou sur le substrat. Malgré tout, de tels revêtements restent sensibles à l'usage répété de matériaux métalliques aiguisés ou pointus, tels des couteaux ou fourchettes.However, such coatings remain fragile. Thus, tips have been developed in order to mechanically reinforce the layer on its support. Numerous improvement patents describe methods and means making it possible to increase the scratch resistance of such coatings, by acting on the coating and / or on the substrate. However, such coatings remain sensitive to the repeated use of sharp or pointed metallic materials, such as knives or forks.
Parallèlement, des développements ont été menés sur des surfaces résistantes mécaniquement dont on a essayé d'améliorer la facilité de nettoyage. Des dépôts métalliques, tels le chromage sur inox, les quasi-cristaux, ou non métalliques (silicates,...) sont ainsi apparus.At the same time, developments have been carried out on mechanically resistant surfaces which have been tried to improve the ease of cleaning. Metallic deposits, such as chromium plating on stainless steel, quasi-crystals, or non-metallic (silicates, etc.) have thus appeared.
Les quasi-cristaux sont une phase ou composé métallique présentant, au niveau cristallographique, des symétries de rotation d'axe d'ordre 5, 8, 10 ou 12, comme les phases isocaédriques et décagonales. De tels revêtements sont notamment décrits dans le brevet EP 0 356 287 et présentent des qualités de résistance à la rayure, voire d'anti-adhérence dans certains cas.Quasi-crystals are a metallic phase or compound having, on the crystallographic level, rotation symmetries of order 5, 8, 10 or 12, like the isocahedral and decagonal phases. Such coatings are in particular described in patent EP 0 356 287 and have qualities of resistance to scratching, or even of anti-adhesion in certain cases.
Par ailleurs, le document FR 2784280 décrit une surface de cuisson composite constituée de deux phases céramique et métallique destinées à apporter aux fonds d'ustensile de cuisine traités, une non-déformabilité dans leur domaine d'application, ainsi qu'une bonne résistance à l'usure. Cependant, de tels revêtements ne présentent pas de très bonnes performances en ce qui concerne leur facilité de nettoyage, de sorte que l'ajout d'un lubrifiant solide, tel le PTFE, est souvent recommandé lorsque cette fonction est recherchée. Cette étape supplémentaire entraîne globalement un coût important pour l'élaboration d'une telle surface de cuisson.Furthermore, the document FR 2784280 describes a composite cooking surface consisting of two ceramic and metallic phases intended to provide non-deformability in the field of application to the bases of treated kitchen utensils, as well as good resistance to wear. However, such coatings do not exhibit very good performance with regard to their ease of cleaning, so that the addition of a solid lubricant, such as PTFE, is often recommended when this function is sought. This additional step generally entails a significant cost for the preparation of such a cooking surface.
La présente invention vise à remédier aux inconvénients précités de l'art antérieur, en proposant une surface de cuisson aux caractéristiques améliorées de résistance à la rayure, de facilité de nettoyage, de résistance à la corrosion.The present invention aims to remedy the aforementioned drawbacks of the prior art, by providing a cooking surface with improved characteristics of scratch resistance, ease of cleaning, resistance to corrosion.
La présente invention est atteinte par une surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson, caractérisée en ce que cette surface de cuisson est en alliage métallique amorphe.The present invention is achieved by a food cooking surface for a kitchen utensil or cooking appliance, characterized in that this cooking surface is made of amorphous metal alloy.
L'utilisation d'alliages métalliques amorphes, encore appelés verres métalliques apporte des propriétés intéressantes en terme de propriétés de surface (dureté notamment), et d'anti-corrosion. En effet, l'absence de phase cristalline entraîne l'absence des défauts du solide cristallin (dislocations, joints de grain,...) et les phénomènes induits par ces défauts (notamment la corrosion aux joints de grains).The use of amorphous metallic alloys, also called metallic glasses, provides interesting properties in terms of surface properties (hardness in particular), and anti-corrosion. Indeed, the absence of crystalline phase leads to the absence of defects in the crystalline solid (dislocations, grain boundaries, ...) and the phenomena induced by these defects (in particular corrosion at grain boundaries).
Selon la formulation et la mise en œuvre de l'alliage, la présence d'une phase nanocristalline peut être observée. Toutefois, la structure nanocristalline possède des propriétés voisines de la structure amorphe, de par l'absence d'ordre atomique à grande distance, du moins en ce qui concerne les caractéristiques recherchées, telles que précédemment mentionnées. On pourrait même s'attendre à une légère amélioration de la tenue à chaud, notamment en ce qui concerne sa dureté.Depending on the formulation and implementation of the alloy, the presence of a nanocrystalline phase can be observed. However, the nanocrystalline structure has properties similar to the amorphous structure, due to the absence of atomic order at long distance, at least as regards the characteristics sought, as previously mentioned. We could even expect a slight improvement in the heat resistance, especially with regard to its hardness.
D'une manière surprenante, il a été constaté, au cours d'essais, que certains revêtements d'alliages métalliques amorphes présentaient également des propriétés de facilité de nettoyage, qui peut être aussi exprimée par la possibilité d'enlever facilement des éléments carbonisés sur la surface de cuisson. Toutefois, parmi ces alliages, certains ne sont pas compatibles avec le contact alimentaire.Surprisingly, it has been found, during tests, that certain coatings of amorphous metal alloys also have properties of ease of cleaning, which can also be expressed by the possibility of easily removing charred elements on the cooking surface. However, among these alloys, some are not compatible with food contact.
Ainsi, avantageusement, l'alliage a pour formule AaDbEcXd dans laquelle :Thus, advantageously, the alloy has the formula A a DbE c Xd in which:
- A est l'un des éléments Zr ou Cu, - D est au moins un élément choisi dans le groupe constitué de Ni, Cu,- A is one of the elements Zr or Cu, - D is at least one element chosen from the group consisting of Ni, Cu,
Al si A est Zr ou au moins un élément choisi dans le groupe constitué de Ni, Zr, Al si A est Cu,Al if A is Zr or at least one element chosen from the group consisting of Ni, Zr, Al if A is Cu,
- E est au moins un élément choisi dans le groupe constitué de Ti, Hf,- E is at least one element chosen from the group consisting of Ti, Hf,
- X représente les impuretés d'élaboration, avec : - 40 % < a < 70 % at.,- X represents the processing impurities, with: - 40% <a <70% at.,
- 5 % < b < 30 % at, - c < 10 % ai,- 5% <b <30% at, - c <10% ai,
- d <1 % at, et a + b + c + d = 100 % at.- d <1% at, and a + b + c + d = 100% at.
II est important de noter que cette sélection a déjà été effectuée parmi les alliages pouvant être rendus amorphes. De plus, d'autres éléments ont volontairement été écartés par leur toxicité vis-à-vis de l'être humain. Les revêtements proposés n'apportent donc aucune toxicité dans les aliments en contact, même portés à haute température.It is important to note that this selection has already been made from among the alloys which can be made amorphous. In addition, other elements have been deliberately ruled out by their toxicity towards humans. The proposed coatings therefore do not bring any toxicity in food in contact, even brought to high temperature.
Par ailleurs, la sélection des constituants de l'alliage a également tenu compte des éléments qui favorisent la germination des cristaux, afin de limiter ce phénomène.Furthermore, the selection of the constituents of the alloy also took into account the elements which promote the germination of the crystals, in order to limit this phenomenon.
Les teneurs en différents éléments sont le résultat de conditions de mise en œuvre, complétées par des essais concernant la résistance à l'abrasion et la facilité de nettoyage de tels revêtements après des cuissons difficiles. Il est également tenu compte des compositions eutectiques qui présentent une température de fusion basse ainsi qu'une plus faible viscosité du liquide, favorables à l'obtention de l'état amorphe.The contents of various elements are the result of processing conditions, supplemented by tests concerning the abrasion resistance and the ease of cleaning of such coatings after difficult cooking. Account is also taken of eutectic compositions which have a low melting temperature as well as a lower viscosity of the liquid, which are favorable for obtaining the amorphous state.
Les différents essais ont montré d'une manière inattendue qu'une proportion importante de zirconium permet d'obtenir des revêtements présentant une facilité de nettoyage exceptionnelle.The various tests have unexpectedly shown that a large proportion of zirconium makes it possible to obtain coatings having an exceptional ease of cleaning.
De plus, des études ont montré que les alliages comportant au moins trois éléments sont plus stables que les alliages binaires, et sont d'autant plus stables que le nombre d'éléments est important.In addition, studies have shown that alloys comprising at least three elements are more stable than binary alloys, and the more stable the greater the number of elements.
Les alliages réalisés restent notamment stables, sans transformation structurelle, lorsqu'ils sont portés à des températures de l'ordre de 300 °C, températures qui sont supérieures aux températures couramment utilisées pour la cuisson alimentaire.The alloys produced remain notably stable, without structural transformation, when they are brought to temperatures of the order of 300 ° C., temperatures which are higher than the temperatures commonly used for food cooking.
Par ailleurs, le zirconium permet également d'augmenter davantage la stabilité thermique de l'alliage final.Furthermore, zirconium also makes it possible to further increase the thermal stability of the final alloy.
Selon une réalisation avantageuse de la présente invention, l'alliage métallique est de formulation ZraCubNicAldTieXf, où a, b, c, d, e, sont les proportions respectives en Zr, Cu, Ni, Al et Ti de l'alliage, lesdites proportions étant comprises dans les intervalles suivants : - 40 % < a < 70 %According to an advantageous embodiment of the present invention, the metal alloy has the formulation Zr a Cu b NicAl d Ti e X f , where a, b, c, d, e, are the respective proportions of Zr, Cu, Ni, Al and Ti of the alloy, said proportions being included in the following ranges: - 40% <a <70%
- 10 % < b < 25 %- 10% <b <25%
- 5 % < c < 15 %- 5% <c <15%
- 5 % < d < 15 %- 5% <d <15%
- 2 % < e < 10 %, et où X représente les impuretés d'élaboration, avec f < 1 % at.- 2% <e <10%, and where X represents the processing impurities, with f <1% at.
Dans cette formulation, a + b +c + d + e + f = 100 % at. Les éléments entrant dans la composition de ces alliages ont été sélectionnés notamment afin que l'alliage correspondant présente une température de transition vitreuse élevée. Les compositions ont été a priori définies pour se rapprocher des compositions correspondant à des eutectiques afin de diminuer la température du liquide, ce qui permet des vitesses de refroidissement plus faibles pour obtenir l'état amorphe avec ou non présence de phase nanocristalline.In this formulation, a + b + c + d + e + f = 100% at. The elements used in the composition of these alloys have been selected in particular so that the corresponding alloy has a high glass transition temperature. The compositions were a priori defined to approximate the compositions corresponding to eutectics in order to decrease the temperature of the liquid, which allows lower cooling rates to obtain the amorphous state with or without the presence of nanocrystalline phase.
Bien entendu, la composition des alliages a été orientée également par les propriétés visées de résistance mécanique, d'anti-corrosion et de facilité de nettoyage de l'alliage obtenu.Of course, the composition of the alloys was also oriented by the targeted properties of mechanical resistance, anti-corrosion and ease of cleaning of the alloy obtained.
Selon un premier mode de mise en œuvre de l'invention, la surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson est obtenue par le dépôt d'une épaisseur appropriée du matériau métallique sur un substrat. Ce dépôt peut être réalisé par l'un ou l'autre des procédés suivants : projection thermique d'une poudre d'une granulométrie adéquate, dépôt par électrophorèse d'une poudre micro ou sub-micronique, pulvérisation cathodique d'une cible massive. Dans ce dernier cas la cible peut être obtenue par assemblage sur un substrat de cuivre d'une ou plusieurs tôles ou plaques de matériau ayant la composition recherchée, lesdites tôles ou plaques étant obtenues soit par frittage de poudre ou projection thermique de poudre, soit issues de coulée. D'autres techniques, telles le compactage à chaud ou le dépôt par électrolyse peuvent également être utilisées.According to a first embodiment of the invention, the food cooking surface for kitchen utensil or cooking appliance is obtained by depositing an appropriate thickness of the metallic material on a substrate. This deposition can be carried out by one or other of the following methods: thermal spraying of a powder of an adequate particle size, deposition by electrophoresis of a micro or sub-micronic powder, sputtering of a massive target. In the latter case the target can be obtained by assembling on a copper substrate one or more sheets or plates of material having the desired composition, said sheets or sheets being obtained either by powder sintering or thermal spraying of powder, or from of casting. Other techniques, such as hot compaction or deposition by electrolysis can also be used.
Cette mise en œuvre présente l'avantage d'utiliser peu de matière et de pouvoir ajuster l'épaisseur de la surface de cuisson.This implementation has the advantage of using little material and being able to adjust the thickness of the cooking surface.
Toutes ces techniques permettent, par ailleurs, d'obtenir des dépôts en forte cohésion avec le substrat sur lequel ils sont déposés. Les risques de dégradation du dépôt par des objets pointus de type couteau ou fourchette sont donc très faibles.All these techniques also make it possible to obtain deposits which are in strong cohesion with the substrate on which they are deposited. The risks of degradation of the deposit by sharp objects of the knife or fork type are therefore very low.
Le matériau déposé dans les procédés précédemment décrits peut être issu d'une poudre, amorphe à l'origine ou bien obtenue par broyage d'un alliage cristallisé, ladite poudre subissant ensuite une étape de vitrification avant l'étape de dépôt ou lors de l'étape de dépôt, selon la technique utilisée. Dans ce mode opératoire, l'idée est donc d'obtenir la phase amorphe en tout dernier lieu. Selon un second mode de mise en œuvre de l'invention, la surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson est obtenue par assemblage d'une tôle en alliage amorphe avec ou non présence d'une phase nanocristalline sur un substrat. Cette mise en œuvre présente l'avantage de se rapprocher des mises en œuvre connues d'assemblage des métaux, ce qui permet de pouvoir adapter des techniques connues sans développement spécifique important.The material deposited in the processes described above can come from a powder, originally amorphous or else obtained by grinding a crystallized alloy, said powder then undergoing a vitrification step before the deposition step or during the 'deposition step, depending on the technique used. In this operating mode, the idea is therefore to obtain the amorphous phase in the very last place. According to a second embodiment of the invention, the food cooking surface for kitchen utensil or cooking appliance is obtained by assembling an amorphous alloy sheet with or without the presence of a nanocrystalline phase on a substrate. This implementation has the advantage of approaching known implementations of metal assembly, which makes it possible to be able to adapt known techniques without significant specific development.
Selon un mode opératoire, la tôle est obtenue par laminage d'un lingot amorphe issu d'une fusion d'un mélange de métaux. Il est particulièrement intéressant, d'un point de vue économique, d'utiliser la méthode de fusion puis laminage, notamment dans le cas des amorphes, car ils présentent un taux de réduction par laminage, à température maîtrisée, important.According to one procedure, the sheet is obtained by rolling an amorphous ingot from a fusion of a mixture of metals. It is particularly advantageous, from an economic point of view, to use the melting and then rolling method, in particular in the case of amorphous materials, since they have a significant reduction rate by rolling, at controlled temperature.
Selon un autre procédé d'élaboration, la tôle est obtenue par la technique de solidification à la roue.According to another production process, the sheet is obtained by the wheel solidification technique.
Cette technique, en solidifiant l'alliage métallique sur une roue refroidie animée d'un mouvement de rotation, permet d'obtenir des vitesses de refroidissement suffisamment élevées pour qu'un film amorphe puisse se former. Les épaisseurs obtenues, pouvant atteindre 0,1 mm, sont tout à fait compatibles avec l'usage envisagé, sans qu'il soit nécessaire d'effectuer un laminage ultérieur.This technique, by solidifying the metal alloy on a cooled wheel animated by a rotational movement, makes it possible to obtain sufficiently high cooling rates for an amorphous film to be able to form. The thicknesses obtained, up to 0.1 mm, are entirely compatible with the intended use, without the need for subsequent rolling.
Dans ce second mode de mise en œuvre de l'invention, l'assemblage de la tôle sur le substrat est réalisé par l'une des techniques suivantes : colaminage, brasage, frappe à chaud, d'une manière connue en soi.In this second embodiment of the invention, the assembly of the sheet on the substrate is carried out by one of the following techniques: co-laminating, brazing, hot stamping, in a manner known per se.
Avantageusement, la tôle et le substrat subissent, après assemblage, une étape de mise en forme par emboutissage.Advantageously, the sheet and the substrate undergo, after assembly, a shaping step by stamping.
D'autres avantages issus des essais apparaîtront à la lecture de la description qui va suivre, en relation avec un exemple d'illustration de la présente invention donné à titre d'exemple non limitatif. L'exemple de réalisation de l'invention concerne un substrat massif d'alliage amorphe de composition obtenu par fusion en creuset inductif d'un lingot massif refroidi dans un moule en cuivre selon des conditions entraînant la formation d'un alliage amorphe. Une face de ce substrat a subi un polissage poussé, proche du poli optique, avant la réalisation d'essais, afin de la rendre comparable à d'autres surfaces de cuisson pour que les essais d'évaluation de la facilité à nettoyer une telle surface, dans une utilisation de cuisson domestique, puissent être comparés.Other advantages resulting from the tests will appear on reading the description which follows, in relation to an illustrative example of the present invention given by way of nonlimiting example. The embodiment of the invention relates to a solid substrate of amorphous alloy of composition obtained by melting in an inductive crucible a solid ingot cooled in a copper mold under conditions leading to the formation of an amorphous alloy. One face of this substrate has undergone a thorough polishing, close to the optical polish, before carrying out tests, in order to make it comparable to other cooking surfaces so that the tests for evaluating the ease of cleaning such a surface , in home cooking use, can be compared.
Le système d'évaluation de la facilité de nettoyage permet de quantifier les capacités d'une surface de cuisson à retrouver son aspect d'origine après usage. Ce système d'évaluation comprend les étapes suivantes :The system for evaluating the ease of cleaning makes it possible to quantify the capacities of a cooking surface to regain its original appearance after use. This evaluation system includes the following stages:
- la surface est localement recouverte d'un mélange alimentaire de composition connue, - ce mélange est carbonisé dans un four dans des conditions définies, par exemple 210 °C pendant 20 minutes,the surface is locally covered with a food mixture of known composition, this mixture is charred in an oven under defined conditions, for example 210 ° C. for 20 minutes,
- après refroidissement, la surface est mise à tremper pendant un temps contrôlé dans un mélange d'eau et de détergent,- after cooling, the surface is soaked for a controlled time in a mixture of water and detergent,
- un tampon abrasif est ensuite appliqué sous une contrainte définie à l'aide d'un appareil à abraser (plynomètre) sur la surface souillée dans un mouvement de va-et-vient pendant un nombre donné de cycles,- an abrasive pad is then applied under a defined stress using an abrading device (plynometer) on the soiled surface in a reciprocating movement during a given number of cycles,
- le pourcentage de la surface correctement nettoyée est noté et caractérise la facilité de nettoyage de la surface de cuisson.- the percentage of the surface properly cleaned is noted and characterizes the ease of cleaning the cooking surface.
Les essais menés sur différents types de surface permettent ainsi d'évaluer comparativement la qualité des surfaces quant à leur facilité de nettoyage.Tests carried out on different types of surface thus make it possible to compare the quality of surfaces with regard to their ease of cleaning.
Bien entendu, les essais sont réalisés en respectant les mêmes paramètres pour chaque étape du système d'évaluation : même mélange alimentaire, même surface d'application du mélange alimentaire, même température de carbonisation,...Of course, the tests are carried out respecting the same parameters for each step of the evaluation system: same food mixture, same surface for applying the food mixture, same carbonization temperature, etc.
Le tableau comparatif suivant montre les résultats obtenus sur trois surfaces de cuisson différentes, à savoir un inox poli, un quasi-cristaux, et l'alliage amorphe de formulation Zr6oCuι ι5NiιoAI7ι5Ti5 tel que précédemment décrit, dans un test sévère avec une composition alimentaire à base de lait et de riz réputée comme difficile à nettoyer une fois carbonisée. Un tel test permet ainsi de bien mettre en évidence les différences entre la qualité de nettoyage des surfaces.The following comparative table shows the results obtained on three surfaces of different cooking, namely a polished stainless steel, a quasi-crystal, and the amorphous alloy of formulation Zr 6 oCuι ι5 NiιoAI 7ι5 Ti 5 as previously described, in a severe test with a food composition based on milk and rice deemed as difficult to clean once charred. Such a test thus makes it possible to clearly highlight the differences between the quality of cleaning of the surfaces.
Le tableau montre sans ambiguïté les résultats exceptionnels obtenus avec l'alliage amorphe.The table clearly shows the exceptional results obtained with the amorphous alloy.
Il est à noter que le nombre de cycles d'abrasion sur le plynomètre a été fixé à 10. Ce faible nombre de cycles met bien en évidence la qualité de facilité de nettoyage de la surface amorphe puisqu'il ne reste plus que 10 % de la surface souillée après seulement 10 mouvements de va-et-vient du tampon abrasif.It should be noted that the number of abrasion cycles on the plynometer has been fixed at 10. This low number of cycles clearly demonstrates the quality of ease of cleaning of the amorphous surface since there is only 10% left. the soiled surface after only 10 back and forth movements of the abrasive pad.
Des essais répétitifs après nettoyage complet de la surface montrent que la facilité de nettoyage de l'alliage amorphe n'est pas altérée.Repetitive tests after complete cleaning of the surface show that the ease of cleaning of the amorphous alloy is not impaired.
Lorsque la mise en œuvre de l'invention implique l'utilisation d'un substrat, celui-ci est alors composé d'une ou plusieurs tôle(s) métallique(s) des matériaux suivants : aluminium, inox, fonte, acier, cuivre. Cependant, la présente invention n'est pas limitée à la réalisation d'une couche de faible épaisseur d'un alliage métallique amorphe avec ou non la présence d'une phase nanocristalline déposée ou assemblée sur un substrat épais, mais vise également à la réalisation de matériau massif, avec ou sans substrat, ce dernier, lorsqu'il est présent, n'ayant pas un rôle de support mécanique de la couche, mais assurant une autre fonction, telle que la répartition thermique de la chaleur pour un ustensile posé sur une source de chaleur (poêle , casseroles,...). When the implementation of the invention involves the use of a substrate, it is then composed of one or more metal sheet (s) of the following materials: aluminum, stainless steel, cast iron, steel, copper . However, the present invention is not limited to the production of a thin layer of an amorphous metal alloy with or without the presence of a nanocrystalline phase deposited or assembled on a thick substrate, but also aims at producing solid material, with or without substrate, the latter, when present, not having a role of mechanical support for the layer, but ensuring another function, such as the thermal distribution of heat for a utensil placed on a heat source (stove, pots, ...).

Claims

REVENDICATIONS
1. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson, caractérisée en ce que cette surface de cuisson est en alliage métallique amorphe.1. Food cooking surface for kitchen utensil or cooking appliance, characterized in that this cooking surface is made of amorphous metal alloy.
2. Surface de cuisson selon la revendication précédente, caractérisée en ce que l'alliage comporte une phase nanocristalline.2. Cooking surface according to the preceding claim, characterized in that the alloy comprises a nanocrystalline phase.
3. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications précédentes, caractérisée en ce que l'alliage a pour formule AaDbEcXci dans laquelle :3. Food cooking surface for kitchen utensil or cooking appliance according to one of the preceding claims, characterized in that the alloy has the formula AaD b E c Xci in which:
- A est l'un des éléments Zr ou Cu,- A is one of the elements Zr or Cu,
- D est au moins un élément choisi dans le groupe constitué de Ni, Cu, Al si A est Zr ou au moins un élément choisi dans le groupe constitué de Ni, Zr, Al si A est Cu,D is at least one element chosen from the group consisting of Ni, Cu, Al if A is Zr or at least one element chosen from the group consisting of Ni, Zr, Al if A is Cu,
- E est au moins un élément choisi dans le groupe constitué de Ti, Hf,- E is at least one element chosen from the group consisting of Ti, Hf,
- X représente les impuretés d'élaboration, avec :- X represents the processing impurities, with:
- 40 % < a < 70 % at., - 5 % < b < 30 % at.,- 40% <a <70% at., - 5% <b <30% at.,
- c < 10 % at.,- c <10% at.,
- d <1 % at, et- d <1% at, and
a + b + c + d = 100 % at.a + b + c + d = 100% at.
4. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon la revendication 3, caractérisée en ce que l'alliage métallique est de formulation ZraCUbNicAldTiθXf,4. Food cooking surface for kitchen utensil or cooking appliance according to claim 3, characterized in that the metal alloy is of formulation Zr a CUbNicAldTiθXf,
- où a, b, c, d, e, sont les proportions respectives en Zr, Cu, Ni, Al et Ti de l'alliage, lesdites proportions étant comprises dans les intervalles suivants : - 40 % < a < 70 %- where a, b, c, d, e, are the respective proportions of Zr, Cu, Ni, Al and Ti of the alloy, said proportions being included in the following ranges: - 40% <a <70%
- 10 % < b < 25 % - 5 % < c < 15 % - 5 % < d < 15 % - 2 % < e < 10 %,- 10% <b <25% - 5% <c <15% - 5% <d <15% - 2% <e <10%,
- où X représente les impuretés d'élaboration, avec f < 1 % at,- where X represents the processing impurities, with f <1% at,
- où a + b +c + d + e + f = 100 % at.- where a + b + c + d + e + f = 100% at.
5. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications précédentes, caractérisée en ce qu'elle est obtenue par le dépôt d'une épaisseur appropriée du matériau métallique sur un substrat.5. Food cooking surface for kitchen utensil or cooking appliance according to one of the preceding claims, characterized in that it is obtained by depositing an appropriate thickness of the metallic material on a substrate.
6. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon la revendication 5, caractérisée en ce que le dépôt est réalisé par pulvérisation cathodique d'une cible massive.6. Food cooking surface for kitchen utensil or cooking appliance according to claim 5, characterized in that the deposition is carried out by sputtering of a massive target.
7. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon la revendication 6, caractérisée en ce que la cible est obtenue par assemblage sur un substrat de cuivre d'une ou plusieurs tôles ou plaques de matériau ayant la composition recherchée, lesdites tôles ou plaques étant obtenues soit par frittage de poudre ou projection thermique de poudre, soit issues de coulée.7. Food cooking surface for kitchen utensil or cooking appliance according to claim 6, characterized in that the target is obtained by assembly on a copper substrate of one or more sheets or plates of material having the desired composition , said sheets or plates being obtained either by powder sintering or thermal spraying of powder, or from casting.
8. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications 5 à 7, caractérisée en ce que le matériau est issu d'une poudre d'alliage obtenue par broyage d'un alliage cristallisé, ladite poudre subissant ensuite une étape de vitrification.8. Food cooking surface for kitchen utensil or cooking appliance according to one of claims 5 to 7, characterized in that the material comes from an alloy powder obtained by grinding a crystallized alloy, said powder then undergoing a vitrification step.
9. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications 1 à 4, caractérisée en ce qu'elle est obtenue par assemblage d'une tôle en alliage amorphe sur un substrat.9. Food cooking surface for kitchen utensil or cooking appliance according to one of claims 1 to 4, characterized in that it is obtained by assembling a sheet of amorphous alloy on a substrate.
10. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon la revendication 9, caractérisée en ce que la tôle est obtenue par laminage d'un lingot amorphe ou nanocristallin issu d'une fusion d'un mélange de métaux. 10. Food cooking surface for kitchen utensil or cooking appliance according to claim 9, characterized in that the sheet is obtained by rolling an amorphous or nanocrystalline ingot from a fusion of a mixture of metals.
11. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon la revendication 9, caractérisée en ce que la tôle est obtenue par la technique de solidification à la roue.11. Food cooking surface for kitchen utensil or cooking appliance according to claim 9, characterized in that the sheet is obtained by the wheel solidification technique.
12. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications 9 à 11 , caractérisée en ce que l'assemblage est réalisé par l'une des techniques suivantes : colaminage, brasage, frappe à chaud.12. Food cooking surface for kitchen utensil or cooking appliance according to one of claims 9 to 11, characterized in that the assembly is carried out by one of the following techniques: co-laminating, soldering, hot stamping .
13. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications 9 à 12, caractérisée en ce que la tôle et le substrat subissent, après assemblage, une étape de mise en forme par emboutissage.13. Food cooking surface for kitchen utensil or cooking appliance according to one of claims 9 to 12, characterized in that the sheet and the substrate undergo, after assembly, a shaping step by stamping.
14. Surface de cuisson d'aliment pour ustensile de cuisine ou appareil de cuisson selon l'une des revendications 5 à 13, caractérisée en ce que le substrat est composé d'une ou plusieurs tôle(s) métallique(s) des matériaux suivants : aluminium, inox, fonte, acier, cuivre. 14. Food cooking surface for kitchen utensil or cooking appliance according to one of claims 5 to 13, characterized in that the substrate is composed of one or more metal sheet (s) of the following materials : aluminum, stainless steel, cast iron, steel, copper.
A. CLASSIFICATION OF SUBJECT MATTERA. CLASSIFICATION OF SUBJECT MATTER
IPC 7 C22C45/00 C22C45/10 A47J36/02IPC 7 C22C45 / 00 C22C45 / 10 A47J36 / 02
According to International Patent Classification (IPC) orto both national classification and IPCAccording to International Patent Classification (IPC) orto both national classification and IPC
B. FIELDS SEARCHEDB. FIELDS SEARCHED
Minimum documentation searched (classification System followed by classification symbols)Minimum documentation searched (System classification followed by classification symbols)
IPC 7 C22C A47JIPC 7 C22C A47J
Documentation searched other than minimum documentation to the extent that such documents are included m the fields searchedDocumentation searched other than minimum documentation to the extent that such documents are included m the fields searched
Electronic data base consulted during the international search (name of data base and, where practical, search terms used)Electronic data base consulted during the international search (name of data base and, where practical, search terms used)
EPO-Internal , WPI Data , PAJEPO-Internal, WPI Data, PAJ
C. DOCUMENTS CONSIDERED TO BE RELEVANTC. CONSIDERED TO BE RELEVANT DOCUMENTS
Category " Citation of document with indication, where appropπate, of the relevant passages Relevant to daim NoCategory "Citation of document with indication, where appropπate, of the relevant passages Relevant to daim No
DE 19833329 A (D ESDEN EV INST 1-14 FESTKOERPER) 27 January 2000 (2000-01-27) col umn 1 , u ne 1 -col umn 3 , u ne 10DE 19833329 A (D ESDEN EV INST 1-14 FESTKOERPER) 27 January 2000 (2000-01-27) col umn 1, u ne 1 -col umn 3, u ne 10
US 5735975 A (JOHNSON WILLIAM L ET AL) 1-3US 5735975 A (JOHNSON WILLIAM L ET AL) 1-3
7 April 1998 (1998-04-07) col umn 3 , Une 26 -col umn 4 , une 617 April 1998 (1998-04-07) col umn 3, Une 26 -col umn 4, une 61
EP 0356 287 A (CENTRE NAT RECH SCIENT) 1,2 28 February 1990 (1990-02-28) page 1 , 1 i ne 5 - l i ne 51EP 0356 287 A (CENTER NAT RECH SCIENT) 1,2 28 February 1990 (1990-02-28) page 1, 1 i ne 5 - l i ne 51
US 2002/003013 Al (HAYS CHARLES C) 5-14 10 January 2002 (2002-01-10) paragraphs ' 0014 ! , ' 0017 !US 2002/003013 Al (HAYS CHARLES C) 5-14 10 January 2002 (2002-01-10) paragraph '0014! , '0017!
D Further documents are listed in the continuation of box C Patent family members are hsted m annexD Further documents are listed in the continuation of box C Patent family members are hsted m annex
° Spécial catégories of cited documents° Special categories of cited documents
"T" later document published after the international filing date or pπonty date and not in confiict with the application but"T" later document published after the international filing date or pπonty date and not in confiict with the application but
"A" document defining the gênerai state of the art which is not cited to understand the pπnciple or theory underlying the considβred to be of particular relevance invention "E" earlier document but published on or after the international "X" document of particular relevance, the claimβd invention filing date cannot be considered novel or cannot be considered to"A" document defining the general state of the art which is not cited to understand the pπnciple or theory underlying the considβred to be of particular relevance invention "E" earlier document but published on or after the international "X" document of particular relevance, the claimβd invention filing date cannot be considered novel or cannot be considered to
"L* document which maythrow doubts on pπonty claιm(s) or involve an inventive step when the document is taken alone which is cited to establish the publication date of another "Y" document of particular relevance, the claimed invention citation or other spécial reason (as specified) cannot be considered to involve an inventive step when the"L * document which maythrow doubts on pπonty claιm (s) or involve an inventive step when the document is taken alone which is cited to establish the publication date of another" Y "document of particular relevance, the claimed invention citation or other special reason (as specified) cannot be considered to involve an inventive step when the
"O" document referπng to an oral disclosure, use, exhibition or document is combined with one or more other such docuother means ments, such combination being obvious to a person skilled "P" document published pnor to the international filing date but in the art later than the pnoπty date claimed "&" document member of the same patent family"O" document referπng to an oral disclosure, use, exhibition or document is combined with one or more other such docuother means ments, such combination being obvious to a person skilled "P" document published pnor to the international filing date but in the art later than the pnoπty date claimed "&" document member of the same patent family
Date of the actual completion of the international search Date of mailing of the international search reportDate of the actual completion of the international search Date of mailing of the international search report
30 September 2003 09/10/2003September 30, 2003 10/09/2003
Name and mailing address of the ISA Authonzed officerName and mailing address of the ISA Authonzed officer
European Patent Office, P B 5818 Patentlaan 2 NL - 2280 HV Rljswijk Tel (+31-70) 340-2040, Tx 31 651 epo ni, Fax (+31-70) 340-3016 Lehe , JEuropean Patent Office, PB 5818 Patentlaan 2 NL - 2280 HV Rljswijk Tel (+ 31-70) 3 40 -20 4 0, Tx 31 651 epo ni, Fax (+ 31-70) 3 4 0-3016 Lehe, J
Fσrm FCT/ISA/210 (second sheel) (July 1992) Fσrm FCT / ISA / 210 (second sheel) (July 1992)
EP03756003A 2002-05-30 2003-05-22 Easy-clean cooking surface and electrical household appliance comprising such a surface Withdrawn EP1507880A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10177986.6A EP2316982A3 (en) 2002-05-30 2003-05-22 Cooking surface which is easy to clean and household appliance having such a surface

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0206644 2002-05-30
FR0206644A FR2840177B1 (en) 2002-05-30 2002-05-30 EASY TO CLEAN COOKING SURFACE AND HOUSEHOLD APPLIANCE HAVING SUCH A SURFACE
PCT/FR2003/001550 WO2003102259A1 (en) 2002-05-30 2003-05-22 Easy-clean cooking surface and electrical household appliance comprising such a surface

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10177986.6A Division EP2316982A3 (en) 2002-05-30 2003-05-22 Cooking surface which is easy to clean and household appliance having such a surface

Publications (1)

Publication Number Publication Date
EP1507880A1 true EP1507880A1 (en) 2005-02-23

Family

ID=29558848

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03756003A Withdrawn EP1507880A1 (en) 2002-05-30 2003-05-22 Easy-clean cooking surface and electrical household appliance comprising such a surface
EP10177986.6A Withdrawn EP2316982A3 (en) 2002-05-30 2003-05-22 Cooking surface which is easy to clean and household appliance having such a surface

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10177986.6A Withdrawn EP2316982A3 (en) 2002-05-30 2003-05-22 Cooking surface which is easy to clean and household appliance having such a surface

Country Status (7)

Country Link
US (1) US20050205172A1 (en)
EP (2) EP1507880A1 (en)
JP (1) JP4390275B2 (en)
AU (1) AU2003260564A1 (en)
FR (1) FR2840177B1 (en)
RU (1) RU2318424C2 (en)
WO (1) WO2003102259A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102409467B1 (en) * 2022-03-25 2022-06-16 리나스대성(주) Surface treated soup kettle or frying pan by multi step surface treating method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2848797B1 (en) * 2002-12-20 2005-05-27 Seb Sa EASY-TO-CLEAN COOKING SURFACE AND HOUSEHOLD ARTICLE COMPRISING SUCH A SURFACE
US7781679B1 (en) * 2005-09-09 2010-08-24 Magnecomp Corporation Disk drive suspension via formation using a tie layer and product
US8770262B2 (en) * 2011-08-11 2014-07-08 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Stainless steel-and-amorphous alloy composite and method for manufacturing
CN106175408B (en) * 2016-07-22 2018-06-29 湖北荣太炊具有限公司 One kind can electromagnetic heating container and its manufacturing method
CN110846617B (en) * 2019-10-31 2021-06-04 同济大学 Copper-zirconium-aluminum ternary amorphous alloy film and preparation method thereof
CN115161580B (en) * 2021-09-08 2024-02-02 武汉苏泊尔炊具有限公司 Non-stick coating, preparation method thereof and cookware comprising non-stick coating
CN115161582A (en) * 2021-09-08 2022-10-11 武汉苏泊尔炊具有限公司 Processing method of pot and pot
CN115141993B (en) * 2021-09-08 2023-07-07 武汉苏泊尔炊具有限公司 Method for manufacturing cookware
CN115961251B (en) * 2022-12-19 2023-08-08 广东省科学院中乌焊接研究所 Titanium alloy part with nano diphase structure coating and preparation method thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1120749A (en) 1954-12-13 1956-07-11 Method of coating metal surfaces
NO152483C (en) * 1982-12-14 1985-10-09 Ardal Og Sunndal Verk STAINLESS STEEL KITCHEN FOR ALL TYPES OF HEATING SOURCES
US4673468A (en) * 1985-05-09 1987-06-16 Burlington Industries, Inc. Commercial nickel phosphorus electroplating
FR2635117B1 (en) 1988-08-04 1993-04-23 Centre Nat Rech Scient COATING MATERIALS FOR ALUMINUM ALLOYS
EP0564998B1 (en) * 1992-04-07 1998-11-04 Koji Hashimoto Amorphous alloys resistant against hot corrosion
US5641421A (en) * 1994-08-18 1997-06-24 Advanced Metal Tech Ltd Amorphous metallic alloy electrical heater systems
US5735975A (en) * 1996-02-21 1998-04-07 California Institute Of Technology Quinary metallic glass alloys
DE19833329C2 (en) * 1998-07-24 2001-04-19 Dresden Ev Inst Festkoerper High-strength molded body made of zirconium alloys
FR2784280B1 (en) 1998-10-08 2000-12-22 Daniel Bernard METAL CERAMIC COMPOSITES OBTAINED BY THERMAL SPRAYING FOR HEATING ARTICLES
PT1214458E (en) * 1999-09-02 2004-07-30 Inst Festkorper Und Werkstof D METHOD FOR MANUFACTURING MACRICALLY AMORPHED LAYERS IN PERFILED METALLIC BODIES
AU2001255625A1 (en) * 2000-04-24 2001-11-07 California Institute Of Technology Microstructure controlled shear band pattern formation in ductile metal/bulk metallic glass matrix composites prepared by slr processing
US6692590B2 (en) * 2000-09-25 2004-02-17 Johns Hopkins University Alloy with metallic glass and quasi-crystalline properties

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03102259A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102409467B1 (en) * 2022-03-25 2022-06-16 리나스대성(주) Surface treated soup kettle or frying pan by multi step surface treating method

Also Published As

Publication number Publication date
EP2316982A3 (en) 2016-04-27
JP4390275B2 (en) 2009-12-24
US20050205172A1 (en) 2005-09-22
RU2004138572A (en) 2005-09-10
EP2316982A2 (en) 2011-05-04
JP2005528526A (en) 2005-09-22
AU2003260564A1 (en) 2003-12-19
FR2840177A1 (en) 2003-12-05
WO2003102259A1 (en) 2003-12-11
FR2840177B1 (en) 2004-09-10
RU2318424C2 (en) 2008-03-10

Similar Documents

Publication Publication Date Title
EP1859070B1 (en) Easy-to-clean cooking surface and kitchen utensil comprising same
EP2783022B1 (en) Stain-resistant cooking surface and cookware item or electrical household appliance comprising such a cooking surface
WO2003102259A1 (en) Easy-clean cooking surface and electrical household appliance comprising such a surface
EP0356287B1 (en) Cladding materials for metal alloys and for metals
EP0521138B1 (en) Aluminium alloys, substrates coated with same and their applications
CA2554285C (en) Metal coating for a kitchen utensil
EP1575403B1 (en) Easy-to-clean cooking surface
US7833637B2 (en) Easy-to-clean cooking surface and electrical household appliance comprising such a surface
EP1662953B1 (en) Easy-to-clean cooking surface and electric household appliance comprising same
CA2656702C (en) Easy-clean cooking surface and domestic electrical article comprising such a surface

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041105

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SEB S.A.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20161201