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CH363540A - Pièce présentant une surface pourvue d'une couche de revêtement - Google Patents

Pièce présentant une surface pourvue d'une couche de revêtement

Info

Publication number
CH363540A
CH363540A CH3396256A CH3396256A CH363540A CH 363540 A CH363540 A CH 363540A CH 3396256 A CH3396256 A CH 3396256A CH 3396256 A CH3396256 A CH 3396256A CH 363540 A CH363540 A CH 363540A
Authority
CH
Switzerland
Prior art keywords
sep
refractory
part according
carbide
coating layer
Prior art date
Application number
CH3396256A
Other languages
English (en)
Inventor
Marion Poorman Richard
Briggs Sargent Herbert
Lamprey Headlee
Original Assignee
Union Carbide Corp
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
Priority claimed from US515484A external-priority patent/US2964420A/en
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of CH363540A publication Critical patent/CH363540A/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0006—Spraying by means of explosions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/001—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by explosive charges
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • 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
    • 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
    • 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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/126—Detonation spraying
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
    • F41A1/04—Missile propulsion using the combustion of a liquid, loose powder or gaseous fuel, e.g. hypergolic fuel
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/25—Metals
    • C03C2217/263—Metals other than noble metals, Cu or Hg
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/10—Deposition methods
    • C03C2218/17—Deposition methods from a solid phase
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/72—Processes of molding by spraying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/937—Sprayed metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12139—Nonmetal particles in particulate component

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Metallurgy (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Composite Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Nozzles (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Description


  Pièce présentant une surface pourvue d'une couche de revêtement    La présente invention a pour objet     une    pièce  présentant une surface     pourvue    d'une couche de revê  tement, selon la revendication III du brevet princi  pal, c'est-à-dire présentant une     surface        pourvue    d'une  couche de revêtement     formée    de nombreuses, lamel  les     minces    se     recouvrant    entre elles et adhérant for  tement à     cette    surface, ces lamelles étant en une ma  tière autre que celle de la pièce.

       Cette    pièce est ca  ractérisée en ce que ledit revêtement contient au  moins 70 % en poids d'une     substance    réfractaire  ayant un     point    de fusion supérieur à 12990 C, ladite  couche de revêtement ayant une dureté     supérieure    à  600 à l'essai à la pyramide de diamant avec une  charge de 300 g et une porosité de     moins    de 3 %.  



  Le     corps    de la     pièce    peut être par exemple de  métal, de verre ou de matière plastique.  



  Le revêtement peut comprendre un métal ou  alliage métallique comme liant, pour lier la     substance     réfractaire à elle-même et au     corps    à revêtir.  



  On donne à titre d'exemple dans le tableau     ci-          dessous    la     composition    des couches de revêtement de  diverses formes d'exécution de la pièce selon l'inven  tion, les pourcentages étant     rapportés    au revêtement  total  
EMI0001.0022     
  
    <U>Substance <SEP> réfractaire <SEP> Liant</U>
<tb>  <I>Métaux</I>
<tb>  Tungstène <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> sans <SEP> liant <SEP> ou <SEP> Co
<tb>  Tantale <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> sans <SEP> liant
<tb>  Niobium <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> sans <SEP> liant
<tb>  Molybdène <SEP> . <SEP> . <SEP> .

   <SEP> . <SEP> . <SEP> . <SEP> . <SEP> . <SEP> sans <SEP> liant <SEP> ou <SEP> 18 <SEP> % <SEP> Co     
EMI0001.0023     
  
    Substance <SEP> réfractaire <SEP> Liant
<tb>  <I>Carbures</I>
<tb>  Carbure <SEP> de <SEP> tungstène <SEP> . <SEP> , <SEP> sans <SEP> liant <SEP> ou <SEP> Fe-Ni <SEP> ou
<tb>  (WC) <SEP> 12 <SEP> % <SEP> Co <SEP> ou <SEP> 12 <SEP> % <SEP> Ni <SEP> ou
<tb>  6 <SEP> % <SEP> Cu, <SEP> 2 <SEP> % <SEP> Al <SEP> et <SEP> 6 <SEP> %
<tb>  Cr <SEP> ou <SEP> Cr-Mo <SEP> ou <SEP> Cr <SEP> ou <SEP> Ag.
<tb>  Carbure <SEP> de <SEP> titane <SEP> (TiC) <SEP> 20 <SEP> % <SEP> Co <SEP> ou <SEP> 20 <SEP> % <SEP> Ni
<tb>  Carbure <SEP> de <SEP> bore <SEP> (B4C) <SEP> sans <SEP> liant <SEP> ou <SEP> Fe <SEP> ou <SEP> Ni
<tb>  ou <SEP> Fe-Cr
<tb>  Carbure <SEP> de <SEP> chrome <SEP> sans <SEP> liant <SEP> ou <SEP> 25 <SEP> % <SEP> Co
<tb>  (Cr3C2) <SEP> ..........

   <SEP> ou <SEP> 25 <SEP> % <SEP> Ni
<tb>  Carburedetantale <SEP> (TaC) <SEP> 20 <SEP> % <SEP> Co
<tb>  <I>Borures</I>
<tb>  Borure <SEP> de <SEP> titane <SEP> (TiB2) <SEP> Fe <SEP> ou <SEP> Co-Ta
<tb>  Borure <SEP> de <SEP> chrome
<tb>  (CrB2) <SEP> .......... <SEP> 20 <SEP> % <SEP> Fe
<tb>  <I>Nitrures</I>
<tb>  Nitrure <SEP> de <SEP> titane <SEP> (TiN) <SEP> sans <SEP> liant <SEP> ou <SEP> 25 <SEP> % <SEP> Cu
<tb>  ou <SEP> 25 <SEP> % <SEP> Co <SEP> ou <SEP> 25 <SEP> % <SEP> Ni
<tb>  <I>Siliciures</I>
<tb>  I?isiliciure <SEP> de <SEP> molyb- <SEP> sans <SEP> liant <SEP> ou <SEP> 10 <SEP> % <SEP> Co
<tb>  dène <SEP> (MoSi2) <SEP> <B>....</B> <SEP> ou <SEP> 15 <SEP> % <SEP> Cr <SEP> ou <SEP> 20, <SEP> % <SEP> Si
<tb>  <I>Oxydes</I>
<tb>  Oxyde <SEP> d'aluminium <SEP> . <SEP> .

   <SEP> sans <SEP> liant <SEP> ou <SEP> Ni <SEP> ou <SEP> Cr
<tb>  Bioxyde <SEP> de <SEP> titane <SEP> <B>....</B> <SEP> sans <SEP> liant
<tb>  Oxyde <SEP> de <SEP> chrome <SEP> <B>....</B> <SEP> sans <SEP> liant
<tb>  Oxyde <SEP> de <SEP> tantale <SEP> <B>....</B> <SEP> sans <SEP> liant       
EMI0002.0001     
  
    Substance <SEP> réfractaire <SEP> Liant
<tb>  <I>Mélanges <SEP> et <SEP> alliages</I>
<tb>  Alliage <SEP> TiC <SEP> et <SEP> WC <SEP> . <SEP> . <SEP> Co
<tb>  Alliage <SEP> TiC <SEP> et <SEP> TaC <SEP> . <SEP> . <SEP> Co
<tb>  50 <SEP> % <SEP> Cr, <SEP> 40 <SEP> % <SEP> Mo <SEP> et
<tb>  10 <SEP> % <SEP> oxyde <SEP> de <SEP> Ta <SEP> sans <SEP> liant
<tb>  50 <SEP> %- <SEP> Cr, <SEP> 40 <SEP> % <SEP> W <SEP> et
<tb>  10 <SEP> % <SEP> oxyde <SEP> de <SEP> Ta <SEP> sans <SEP> liant
<tb>  40 <SEP> % <SEP> CrB2 <SEP> et
<tb>  40 <SEP> % <SEP> TiB2. <SEP> .

   <SEP> <B>......</B> <SEP> 20 <SEP> % <SEP> Ni
<tb>  WC, <SEP> 25 <SEP> % <SEP> Cr,
<tb>  20 <SEP> % <SEP> Mo <SEP> et <SEP> 5 <SEP> %
<tb>  oxyde <SEP> de <SEP> Ta <SEP> <B>......</B> <SEP> sans <SEP> liant
<tb>  WC <SEP> et <SEP> 2,4 <SEP> % <SEP> TiB2 <SEP> . <SEP> . <SEP> 9,6 <SEP> % <SEP> Co
<tb>  86,7 <SEP> % <SEP> TaC <SEP> et
<tb>  13,3 <SEP> % <SEP> <B>B4C <SEP> ......</B> <SEP> sans <SEP> liant
<tb>  80 <SEP> % <SEP> ZrO2 <SEP> et
<tb>  20 <SEP> % <SEP> TiO2 <SEP> .

   <SEP> <B>.....</B> <SEP> sans <SEP> liant
<tb>  65 <SEP> % <SEP> W <SEP> et <SEP> 35 <SEP> % <SEP> Mo <SEP> sans, <SEP> liant
<tb>  50 <SEP> % <SEP> W <SEP> et <SEP> 25 <SEP> % <SEP> SiO2 <SEP> 25 <SEP> % <SEP> Ni       Voici par exemple, comment on     peut    fabriquer  une forme d'exécution de la     pièce    selon l'invention  On fournit un mélange finement     pulvérisé    (à  grandeur de     particules    principalement entre 10 et  40 microns)     contenant    environ 9 % en poids de       cobalt    et 4 % en poids.

   de carbone, le reste étant du  tungstène, à raison d'environ 4,53 à 6,80 kg par  heure, à un canon de détonation d'environ 1,5 m de  long et ayant un diamètre interne de 2,54     cm.    De       l'acétylène    et de l'oxygène sont fournis     dans,        un        rap-          port     1 mètre cube du premier pour 1 à 2  mètres cubes du second, à une vitesse     moyenne        d7en-          viron    10,2 mètres     cubes    du mélange par heure.

    L'écoulement moyen de l'azote de     purgeage    est réglé  à environ 5,1 mètres cubes à l'heure, et la     fréquence          d'inflammation    à environ quatre à la seconde. On       projette    le mélange au moyen du canon sur la surface  propre d'une     pièce    d'acier S préalablement rendue  rugueuse par sablage, en plaçant     cette        surface    à  7,6 cm de l'extrémité de     sortie    du canon.     Il    se     forme     ainsi sur la surface de la pièce une couche de revê  tement dense et adhérente. L'épaisseur de la couche  de revêtement peut aller jusqu'à 1/2 mm.

   Dans le  cas des conditions indiquées ci-dessus, une couche de  revêtement de cette épaisseur peut être appliquée à  une vitesse d'environ 6,5     cm2    par minute.  



  Le     dessin.        annexé    montre, à un grossissement li  néaire de 300, l'aspect en coupe de la forme d'exé  cution obtenue de la façon décrite ci-dessus.  



  La couche de revêtement, WC, comme on le voit  au     dessin,    est d'une structure dense, à grains fins, en  lamelles.  



  On a     constaté    que la couche de revêtement de la  forme d'exécution décrite ci-dessus avait une densité  apparente sensiblement identique à celle de la ma  tière solide appliquée, à     savoir    de 14,5     g/cc.    La poro  sité était     inférieure    à 1 %.     L'adhérence    de la couche    de revêtement au     support    était     excellente,    comme  l'a démontré le fait qu'il a été possible d'en enlever  des     parties    à la meule jusque et à travers l'interface  sans produire     d'écaillement.     



       Grâce    aux propriétés de sa couche de revêtement,  la pièce selon     l'invention    pourrait être     avantageuse-          ment    une pièce devant     présenter    une     surface        non     glissante (à haute friction), telle que par exemple un  pilon ; une pièce devant présenter une surface d'usure  de forme irrégulière, telle que par exemple une ai  guille de triage du coton; une     pièce    devant présen  ter une surface d'usure de précision, telle que par  exemple un fuseau, une barre ou une     broche    de bru  nissage ;

   ou une pièce de faible     inertie    devant pré  senter une surface d'usure résistante telle     qu'un     guide de fibres textiles ou un     élément    de coussinet à       billes    ; ou encore une     pièce    rotative devant présenter  une surface abrasive pour assurer son propre jeu,  telle que par exemple l'élément rotatif d'un joint à  labyrinthe pour turbine à gaz.  



  La pièce selon l'invention pourrait aussi être, par  exemple, une tige de noyau pour l'emboutissage et  pour la frappe des monnaies, un calibre de vérifica  tion, une mâchoire de concasseur, une rondelle ou  une plaque de garniture d'arbre, un contact électri  que, un alésoir, une lame de scie, une lame de cou  teau, un siège ou une tête de soupape.

Claims (1)

  1. REVENDICATION Pièce présentant une surface pourvue d'une cou che de revêtement, selon la revendication III du brevet principal, caractérisée en ce que ladite couche de revêtement contient au moins 70 % en poids d'une substance réfractaire ayant un point de fusion supérieur à 1299 C, ladite couche de revêtement ayant une dureté supérieure à 600 à l'essai à la pyra mide de diamant avec une charge de 300 g et une porosité de moins de 3 %. SOUS-REVENDICATIONS 1. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un métal réfractaire. 2.
    Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un carbure réfractaire. 3. Pièce selon la sous-revendication 2, caractéri sée en ce que ledit carbure est du carbure de bore. 4. Pièce selon la sous-revendication 2, caracté risée en ce que ledit carbure est du carbure de tungstène. 5. Pièce selon la sous-revendication 3, caracté risée en ce que ledit carbure est sous forme d'alliage. 6.
    Pièce selon la sous-revendication 4, caracté risée en ce que ledit carbure est sous forme d'alliage. 7. Pièce selon la sous-revendication 2, caracté risée en ce que ladite substance réfractaire contient au moins deux composants choisis dans le groupe comprenant le carbure de bore, le carbure de tungs- tène, un alliage de carbure de bore et un alliage de carbure de tungstène. 8. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un borure réfractaire.
    9. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un nitrure réfractaire. 10. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un oxyde réfractaire. 11. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins un siliciure réfractaire.
    12. Pièce selon la revendication, caractérisée en ce que ladite substance réfractaire contient au moins deux composants choisis dans le groupe comprenant les carbures, borures, nitrures, oxydes et siliciures réfractaires. 13. Pièce composée selon la revendication, carac térisée en ce que ladite couche de revêtement con tient un métal ou alliage métallique liant la substance réfractaire à elle-même et au corps de la pièce.
CH3396256A 1955-03-28 1956-06-05 Pièce présentant une surface pourvue d'une couche de revêtement CH363540A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US349856XA 1955-03-28 1955-03-28
US515484A US2964420A (en) 1955-06-14 1955-06-14 Refractory coated body
CH329742T 1956-06-05

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CH363540A true CH363540A (fr) 1962-07-31

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CH329742D CH329742A (fr) 1955-03-28 1952-07-01 Procédé pour former une couche de revêtement sur une surface d'une pièce, et appareil pour la mise en oeuvre de ce procédé
CH349856D CH349856A (fr) 1955-03-28 1956-03-17 Appareil pour former une couche de revêtement sur une surface d'une pièce
CH3396256A CH363540A (fr) 1955-03-28 1956-06-05 Pièce présentant une surface pourvue d'une couche de revêtement

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CH329742D CH329742A (fr) 1955-03-28 1952-07-01 Procédé pour former une couche de revêtement sur une surface d'une pièce, et appareil pour la mise en oeuvre de ce procédé
CH349856D CH349856A (fr) 1955-03-28 1956-03-17 Appareil pour former une couche de revêtement sur une surface d'une pièce

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US (1) US2714563A (fr)
BE (2) BE546121A (fr)
CH (3) CH329742A (fr)
DE (1) DE1184176B (fr)
FR (1) FR1058357A (fr)
GB (3) GB742387A (fr)
LU (3) LU34279A1 (fr)
NL (1) NL91125C (fr)

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GB553099A (en) * 1940-09-29 1943-05-07 Fritz Gfeller Improvements in processes and apparatus for spraying fusible and thermoplastic material
US2374816A (en) * 1942-05-18 1945-05-01 Sern L Hansen Rapid-fire gun
DE813360C (de) * 1949-11-04 1951-09-13 Willi Lehmann Verfahren zur Herstellung von UEberzuegen

Also Published As

Publication number Publication date
BE546121A (fr) 1900-01-01
LU34279A1 (fr)
DE1184176B (de) 1964-12-23
CH329742A (fr) 1958-05-15
US2714563A (en) 1955-08-02
LU33526A1 (fr)
GB787222A (en) 1957-12-04
BE512449A (fr) 1900-01-01
GB742458A (en) 1955-12-30
NL91125C (fr) 1900-01-01
CH349856A (fr) 1960-10-31
LU31550A1 (fr)
FR1058357A (fr) 1954-03-16
GB742387A (en) 1955-12-30

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