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ATE25406T1 - PROCESS FOR COATING METALLIC SURFACES WITH CARBIDES. - Google Patents

PROCESS FOR COATING METALLIC SURFACES WITH CARBIDES.

Info

Publication number
ATE25406T1
ATE25406T1 AT83402215T AT83402215T ATE25406T1 AT E25406 T1 ATE25406 T1 AT E25406T1 AT 83402215 T AT83402215 T AT 83402215T AT 83402215 T AT83402215 T AT 83402215T AT E25406 T1 ATE25406 T1 AT E25406T1
Authority
AT
Austria
Prior art keywords
metallic elements
halogenides
cement
metallic
addition
Prior art date
Application number
AT83402215T
Other languages
German (de)
Inventor
Robert Leveque
Original Assignee
Creusot Loire
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 Creusot Loire filed Critical Creusot Loire
Application granted granted Critical
Publication of ATE25406T1 publication Critical patent/ATE25406T1/en

Links

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
    • C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
    • C23C12/02—Diffusion in one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Vapour Deposition (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Powder Metallurgy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemically Coating (AREA)

Abstract

1. A process for forming a chemical coating in a vapour phase of halogenides, of the surface of metallic parts which must have a high hardness, resulting in the obtainment of monophase superficial layers of carbides of metallic elements of the following series : silicon, titanium, vanadium, chromium, zirconium, niobium, hafnium, tantalum and tungsten, this process, which does not comprise a prior ionic nitriding, being constituted by a gaseous cementation treatment of halogenides of at least one of the aforementioned metallic elements, at temperatures between 800 degrees and 1100 degrees C, during periods between 2 and 20 hours, characterised in that the halogenides of said metallic elements are obtained by using a cement maintained at a distance from the surface to be coated and comprising as sole constituents : at least one of said addition metallic elements, either in the form of ferro-alloy, or in the technically pure state in the metallic form ; an addition of ammonium chloride or fluoride in a proportion between 0.2 and 1.5% by weight of the total mass of the cement ; and an addition of powdered carbon in a proportion between 0.1% and 1.5% of the total mass of the cement, the atmosphere employed being constituted by a neutral gas.
AT83402215T 1982-11-18 1983-11-17 PROCESS FOR COATING METALLIC SURFACES WITH CARBIDES. ATE25406T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8219283A FR2536422A1 (en) 1982-11-18 1982-11-18 PROCESS FOR COATING CARBIDE WITH METAL SURFACES
EP83402215A EP0112206B1 (en) 1982-11-18 1983-11-17 Method of coating metallic surfaces with carbides

Publications (1)

Publication Number Publication Date
ATE25406T1 true ATE25406T1 (en) 1987-02-15

Family

ID=9279281

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83402215T ATE25406T1 (en) 1982-11-18 1983-11-17 PROCESS FOR COATING METALLIC SURFACES WITH CARBIDES.

Country Status (4)

Country Link
EP (1) EP0112206B1 (en)
AT (1) ATE25406T1 (en)
DE (1) DE3369705D1 (en)
FR (1) FR2536422A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765840A (en) * 1987-04-28 1988-08-23 Nauchno-Issledovatelsky Institut Tekhnologii Avtomobilnoi Promyshlennosti Composition for depositing diffusion carbide coatings on iron-carbon alloy articles
GB2204327B (en) * 1987-05-01 1991-07-31 Nii Tekh Avtomobil Promy Deposition of diffusion carbide coatings on iron-carbon alloy articles
DE4037480A1 (en) * 1990-11-24 1992-05-27 Krupp Widia Gmbh METHOD FOR PRODUCING A COATED CARBIDE CUTTING BODY
CN112299882B (en) * 2019-07-23 2023-01-06 中国人民解放军国防科技大学 In-situ preparation method of HfC-based ternary carbide gradient coating on surface of carbon material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR447606A (en) * 1912-03-04 1913-01-10 Giulio Sirovich Improvements in diffusion cementation processes
FR940915A (en) * 1943-03-01 1948-12-28 Diffusion Alloys Ltd Method of diffusing metals inside iron and steel
FR62109E (en) * 1950-10-31 1955-06-10 Onera (Off Nat Aerospatiale) Improvements to the processes for forming surface diffusion alloys, especially chromium
SU692909A1 (en) * 1977-07-01 1979-10-25 Предприятие П/Я Р-6930 Composition for diffusive strengthening of working parts of stamps and press-molds
FR2486103A1 (en) * 1980-07-02 1982-01-08 Zaets Inna Pack diffusion titanium coating of ferrous metal - using mixt. of titanium, alumina, aluminium chloride and graphite

Also Published As

Publication number Publication date
EP0112206A1 (en) 1984-06-27
DE3369705D1 (en) 1987-03-12
EP0112206B1 (en) 1987-02-04
FR2536422A1 (en) 1984-05-25

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee