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WO2012146808A1 - Procédé de revêtement de matériau par projection thermique de compositions - Google Patents

Procédé de revêtement de matériau par projection thermique de compositions Download PDF

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Publication number
WO2012146808A1
WO2012146808A1 PCT/ES2012/070125 ES2012070125W WO2012146808A1 WO 2012146808 A1 WO2012146808 A1 WO 2012146808A1 ES 2012070125 W ES2012070125 W ES 2012070125W WO 2012146808 A1 WO2012146808 A1 WO 2012146808A1
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WO
WIPO (PCT)
Prior art keywords
minutes
temperature
limits
time
maintain
Prior art date
Application number
PCT/ES2012/070125
Other languages
English (en)
Spanish (es)
Inventor
Kudama Abdul RAZZAQ HABIB
Iván CERVERA GONZÁLEZ
Juan José SAURA BARREDA
Original Assignee
Universitat Jaume I De Castellón
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 Universitat Jaume I De Castellón filed Critical Universitat Jaume I De Castellón
Publication of WO2012146808A1 publication Critical patent/WO2012146808A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

Definitions

  • the method of coating materials by thermal projection on their surface of chemical compositions can be used in those industrial applications where it is necessary to protect materials against chemical deterioration, for example by oxidation at high temperature, and / or mechanical, by wear.
  • the field of application is very wide: furnaces for the ceramic industry, pump shafts for the chemical and petrochemical industry and blades for the aeronautical industry, etc. It also allows the recharge of worn parts, which can be coated by the procedure described.
  • compositions for coating materials against mechanical wear and high temperature corrosion are alumina and MCrAlY superalloy.
  • Thermal projection of alumina base coatings The thermal projection processes commonly used to project AI 2 O 3 base coatings are: flame spray (OF), air plasma (APS -Atmospheric Plasma Spray-) and high-speed oxifuel (HVOF).
  • the spray spray alumina base powder (OF) technique has disadvantages compared to the APS and HVOF techniques, in that the structures obtained are larger in size, have larger cracks and porosity.
  • this technique has the advantage of being more economical, easy to use and greater adaptability to manufacturing processes in short series or for the recovery of worn parts.
  • the thermal spray technique of alumina powders, as well as plasma superalloy has the advantage of the high temperature reached (10,000-15,000 ° C) which is suitable for melting all or part of the ceramic powder particles (> 2,000 ° C ).
  • the relatively high speed achieved by said particles produces a deformation thereof by impact, thereby achieving dense deposits with good substrate binding.
  • APS this technique
  • the projection technique of alumina-based powders, as well as super-alloy by HVOF, creates particle velocities between 300-1000 m / s, resulting in an increase in the impact force resulting in a higher density and adhesion of the coating. .
  • the temperature reached is approximately 3300 ° C.
  • alumina (corundum) particles are presented in the stable form CC (rhombohedral), which undergoes a total or partial transformation in metastable phases during thermal projection: ⁇ (cubic), ⁇ (tetragonal or orthorhombic), ⁇ (monoclinic) , among other.
  • ⁇ cubic
  • ⁇ tetragonal or orthorhombic
  • ⁇ monoclinic
  • Thermally projected MCrAlY superalloy coatings are used as protective layers against high temperature oxidation of both Ni base superalloys and austenitic stainless steels.
  • MCrAlY coatings have excellent resistance to dry corrosion and oxidation at high temperatures. These coatings form an oxide layer on the outer surface, and immediately under this layer the material is impoverished in aluminum; also, an interdiffusion zone is formed in contact with the substrate.
  • EBPVD electron beam
  • PS plasma spray
  • the object of the present invention is the development of new methods of coating materials with chemical compositions projected by thermal projection, such that the material obtained has a coating layer that is capable of combining high corrosion resistance at high temperatures and to wear
  • the present invention emerges as a need to improve the methods of coating by thermal projection of currently existing compositions, which allows its use in more demanding conditions from the point of view of resistance to high temperature oxidation and abrasive wear. This allows to obtain a better performance of systems that operate at high temperature, by increasing it, or increasing the service life of the components.
  • Another of the applications is the recycling of parts that have suffered wear and that are no longer suitable for commissioning, since it allows them to be recharged by thermal projection of the chemical composition according to the described method.
  • the present invention relates to a method for coating materials by thermal projection of a chemical composition, characterized in that it comprises at least the following steps:
  • the second time the temperature is increased is made up to a range between 700 ° C and 800 ° C, including both limits.
  • the temperature decrease is performed up to a range between 60 ° C and 90 ° C, including both limits, and more preferably still up to room temperature (which can be considered as 25 ° C in the scope of the present invention) .
  • the gradual increase in temperature, in any of the steps described above that involve this action is carried out at a heating rate between 30 ° C / hour and 60 ° C / hour, including both limits.
  • the gradual decrease in temperature is carried out at a cooling rate between 20 ° C / hour and 50 ° C / hour, including both limits. The variation of these speeds in the process is determined based on the furnace conditions where the process is carried out and the structural dimensions and characteristics of the piece (of the material to be coated).
  • the composition is thermally projected onto the surface of the material by one of the techniques selected within the group consisting of: oxifuel, Plasma Spray, and high speed oxyfuel (HVOF), obtaining coatings of different thicknesses, preferably in the form of a layer.
  • the thickness of said coating layer depends on the thickness of the piece to be coated; however, said thickness is between 10% and 30% of the total thickness of the material to be coated. Preferably, the thickness does not exceed 25% of the total thickness of the material to be coated.
  • the projected composition is preferably in powder form.
  • the heat treatment after the projection of the composition on the surface of the material comprises the following steps:
  • the heat treatment described has as its main function the homogenization of the coating composition on the material and the compaction of the microstructure
  • the chemical coating composition used in the method described herein can be of any type known in the field, but preferably it is of metallic type or a cermet type coating, that is, a mixture of a metal based matrix (such as a superalloy of the M-CrAlY type, where M is a metal that can be nickel) and a ceramic charge (for example, alumina).
  • a metal based matrix such as a superalloy of the M-CrAlY type, where M is a metal that can be nickel
  • a ceramic charge for example, alumina
  • Another object of the present invention is any coated material obtainable by the method described.
  • Figure 1 Heating / cooling ramps for heat treatment of the coating composition according to the present method. The procedure begins at room temperature (25 ° C).
  • Figure 2 shows a SEM micrograph of a system formed by a piece of a material, of metallic type, and a coating according to Example 1 (of metallic type constituted by a NiCrAlY base and a reinforcement of AI 2 O3 ).
  • the material zone is represented as (A) and the coating as (B).
  • a method according to the example and non-limiting nature of the invention is detailed below by way of example according to what is described herein for coating a material, consisting of a metal part, with a chemical composition.
  • Example 1 Method of coating a metal part with a cermet type coating composition.
  • the coating material consists of a composition with a matrix of a NiCrAlY super alloy, where M represents a metal and is Ni, and with an additional charge of a ceramic material, which is alumina.
  • M represents a metal and is Ni
  • a ceramic material which is alumina.
  • the composition has a weight ratio between 10-50% ceramic and 50-90% metal matrix, and is in the form of a powder, in which the particles of the metal base are specifically spherical and alumina particles of polygonal type The particle size in both cases does not exceed 45 microns.
  • the coating composition is used in metal parts, to combat corrosion at high temperatures.
  • Said powder coating composition is projected onto the surface of the metal part by an oxyacetylene gun, and whose projection conditions are shown in Table I.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

La présente invention concerne un procédé de revêtement de matériaux par projection thermique de compositions sur leurs surfaces, ledit procédé consistant à projeter la composition sur la surface du matériau et à soumettre ledit matériau revêtu à un traitement thermique par étapes, qui fait varier la température de l'ensemble, progressivement, de manière graduelle. De préférence, on projette la composition au moyen d'une des techniques sélectionnées dans le groupe composé par projection par oxyfuel, par plasma et par procédé HVOF (projection par flamme supersonique), ceci permettant d'obtenir des revêtements de diverses épaisseurs, de préférence sous forme de couche. Un autre objet de la présente invention est tout matériau revêtu pouvant être obtenu au moyen du procédé selon l'invention.
PCT/ES2012/070125 2011-04-29 2012-02-28 Procédé de revêtement de matériau par projection thermique de compositions WO2012146808A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201130688A ES2391321B1 (es) 2011-04-29 2011-04-29 Método para recubrir materiales mediante proyección térmica de composiciones.
ESP201130688 2011-04-29

Publications (1)

Publication Number Publication Date
WO2012146808A1 true WO2012146808A1 (fr) 2012-11-01

Family

ID=47071637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2012/070125 WO2012146808A1 (fr) 2011-04-29 2012-02-28 Procédé de revêtement de matériau par projection thermique de compositions

Country Status (2)

Country Link
ES (1) ES2391321B1 (fr)
WO (1) WO2012146808A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2131451A1 (es) * 1996-10-04 1999-07-16 Inst Nacional De Tecnica Aeroe Recubrimientos cuasicristalinos tipo barrera termica para la proteccion de componentes de las zonas calientes de turbinas.
US6793968B1 (en) * 1999-03-04 2004-09-21 Siemens Aktiengesellschaft Method and device for coating a product
EP1829984A1 (fr) * 2006-03-01 2007-09-05 United Technologies Corporation Revêtement de barrière thermique à forte densité
EP2270313A2 (fr) * 2009-06-30 2011-01-05 Hitachi, Ltd. Composant à haute température d'une turbine à gaz
EP2309019A2 (fr) * 2009-10-07 2011-04-13 General Electric Company Procédé pour le dépôt de revêtements métalliques utilisant une pulvérisation atomisée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2131451A1 (es) * 1996-10-04 1999-07-16 Inst Nacional De Tecnica Aeroe Recubrimientos cuasicristalinos tipo barrera termica para la proteccion de componentes de las zonas calientes de turbinas.
US6793968B1 (en) * 1999-03-04 2004-09-21 Siemens Aktiengesellschaft Method and device for coating a product
EP1829984A1 (fr) * 2006-03-01 2007-09-05 United Technologies Corporation Revêtement de barrière thermique à forte densité
EP2270313A2 (fr) * 2009-06-30 2011-01-05 Hitachi, Ltd. Composant à haute température d'une turbine à gaz
EP2309019A2 (fr) * 2009-10-07 2011-04-13 General Electric Company Procédé pour le dépôt de revêtements métalliques utilisant une pulvérisation atomisée

Also Published As

Publication number Publication date
ES2391321B1 (es) 2013-10-21
ES2391321A1 (es) 2012-11-23

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