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EP0885980A3 - Process for forming a superficial layer having a high hardness by plasma-free thermochemical treatment - Google Patents

Process for forming a superficial layer having a high hardness by plasma-free thermochemical treatment Download PDF

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Publication number
EP0885980A3
EP0885980A3 EP98401235A EP98401235A EP0885980A3 EP 0885980 A3 EP0885980 A3 EP 0885980A3 EP 98401235 A EP98401235 A EP 98401235A EP 98401235 A EP98401235 A EP 98401235A EP 0885980 A3 EP0885980 A3 EP 0885980A3
Authority
EP
European Patent Office
Prior art keywords
treatment
plasma
free
forming
high hardness
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.)
Granted
Application number
EP98401235A
Other languages
German (de)
French (fr)
Other versions
EP0885980A2 (en
EP0885980B1 (en
Inventor
Patrick Jacquot
Sylvain Foissey
Gérard Veyssiere
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.)
Bodycote SAS
Original Assignee
Innovatique 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 Innovatique SA filed Critical Innovatique SA
Publication of EP0885980A2 publication Critical patent/EP0885980A2/en
Publication of EP0885980A3 publication Critical patent/EP0885980A3/en
Application granted granted Critical
Publication of EP0885980B1 publication Critical patent/EP0885980B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Le procédé selon l'invention consiste à porter les pièces à traiter à une température supérieure à 500°C à l'intérieur d'une enceinte dont l'atmosphère est maintenue à une pression inférieure ou égale à 0,1 mbar, puis à injecter sur les pièces un gaz de traitement, la pression s'établissant alors à une valeur inférieure à la pression atmosphérique pendant une durée pouvant aller de quelques dizaines de minutes à vingt quatre heures ou plus en fonction de la profondeur de traitement désirée.The method according to the invention consists in bringing the parts to be treated to a temperature higher than 500 ° C inside an enclosure whose atmosphere is maintained at a pressure less than or equal to 0.1 mbar, then inject the parts with a treatment, the pressure then being established at a value lower than the pressure atmospheric for a period ranging from a few tens of minutes to twenty four hours or more depending on the desired depth of treatment.

L'invention s'applique au traitement de pièces en titane ou en zirconium.The invention applies to the treatment of titanium or zirconium parts.

EP19980401235 1997-05-23 1998-05-22 Process for forming a superficial layer having a high hardness by plasma-free thermochemical treatment Expired - Lifetime EP0885980B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9706518 1997-05-23
FR9706518A FR2763604B1 (en) 1997-05-23 1997-05-23 PROCESS FOR THE FORMATION, BY A THERMOCHEMICAL TREATMENT WITHOUT PLASMA, OF A SURFACE LAYER HAVING A HIGH HARDNESS

Publications (3)

Publication Number Publication Date
EP0885980A2 EP0885980A2 (en) 1998-12-23
EP0885980A3 true EP0885980A3 (en) 2000-10-11
EP0885980B1 EP0885980B1 (en) 2005-09-14

Family

ID=9507313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980401235 Expired - Lifetime EP0885980B1 (en) 1997-05-23 1998-05-22 Process for forming a superficial layer having a high hardness by plasma-free thermochemical treatment

Country Status (4)

Country Link
EP (1) EP0885980B1 (en)
DE (1) DE69831530T2 (en)
ES (1) ES2247665T3 (en)
FR (1) FR2763604B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909694A1 (en) * 1999-03-05 2000-09-14 Stiftung Inst Fuer Werkstoffte Production of carbonitrided edge layers in a low pressure carburization process comprises enriching the edge layers with nitrogen at the end of the process using molecular nitrogen as donor gas
IT1316270B1 (en) * 2000-12-28 2003-04-03 Ct Sviluppo Materiali Spa PROCEDURE FOR SURFACE TREATMENT OF TITANIUM, PRODUCTS AND MANUFACTURED PRODUCTS MADE OR COATED IN TITANIUM AND TREATED ACCORDING TO SUCH
DE10221605A1 (en) * 2002-05-15 2003-12-04 Linde Ag Method and device for the heat treatment of metallic workpieces
DE102010028165A1 (en) * 2010-04-23 2011-10-27 Robert Bosch Gmbh Process for the carbonitriding of metallic components
WO2022184812A1 (en) 2021-03-03 2022-09-09 Elos Medtech Pinol A/S Surface hardening of group iv metals

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136037A5 (en) * 1971-04-05 1972-12-22 Metaux Precieux Sa
JPS6244283A (en) * 1985-08-23 1987-02-26 松下電工株式会社 Electric razor blade
JPS63157852A (en) * 1986-12-22 1988-06-30 Mitsubishi Heavy Ind Ltd Method for carburizing ti-6al-4v alloy
EP0449793A1 (en) * 1990-03-21 1991-10-02 TISURF INTERNATIONAL Aktiebolag Products made of titanium or titanium alloys with a nitride layer in the surface, and a method of manufacturing such products
EP0465333A1 (en) * 1990-07-02 1992-01-08 Acieries Aubert Et Duval Method and installation for the cementation of metallic alloy articles at low pressure
DE4239392A1 (en) * 1991-11-29 1993-06-03 Volkswagen Ag Surface hardness increase of titanium material components - by deoxidising thermal treatment, and application of nitrogen diffusion coating
JPH0790541A (en) * 1993-09-13 1995-04-04 Demutetsuku Kk Mixed gas penetration modifying method and device therefor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136037A5 (en) * 1971-04-05 1972-12-22 Metaux Precieux Sa
JPS6244283A (en) * 1985-08-23 1987-02-26 松下電工株式会社 Electric razor blade
JPS63157852A (en) * 1986-12-22 1988-06-30 Mitsubishi Heavy Ind Ltd Method for carburizing ti-6al-4v alloy
EP0449793A1 (en) * 1990-03-21 1991-10-02 TISURF INTERNATIONAL Aktiebolag Products made of titanium or titanium alloys with a nitride layer in the surface, and a method of manufacturing such products
EP0465333A1 (en) * 1990-07-02 1992-01-08 Acieries Aubert Et Duval Method and installation for the cementation of metallic alloy articles at low pressure
DE4239392A1 (en) * 1991-11-29 1993-06-03 Volkswagen Ag Surface hardness increase of titanium material components - by deoxidising thermal treatment, and application of nitrogen diffusion coating
JPH0790541A (en) * 1993-09-13 1995-04-04 Demutetsuku Kk Mixed gas penetration modifying method and device therefor

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8714, Derwent World Patents Index; Class M13, AN 87-097023, XP002054660 *
F. PREISSER: "hochdrucknitrieren von titanwerkstoffen", HTM HARTEREI-TECHNISCHE MITTEILUNGEN, vol. 46, no. 6, November 1991 (1991-11-01) - December 1991 (1991-12-01), MUNICH,DE, pages 361 - 366, XP000237447 *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 426 (C - 542) 10 November 1988 (1988-11-10) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 007 31 August 1995 (1995-08-31) *

Also Published As

Publication number Publication date
EP0885980A2 (en) 1998-12-23
FR2763604B1 (en) 1999-07-02
ES2247665T3 (en) 2006-03-01
EP0885980B1 (en) 2005-09-14
DE69831530D1 (en) 2005-10-20
FR2763604A1 (en) 1998-11-27
DE69831530T2 (en) 2006-06-14

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