EP0464265A1 - Procédé de nitruration de titane - Google Patents

Procédé de nitruration de titane Download PDF

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Publication number
EP0464265A1
EP0464265A1 EP90125660A EP90125660A EP0464265A1 EP 0464265 A1 EP0464265 A1 EP 0464265A1 EP 90125660 A EP90125660 A EP 90125660A EP 90125660 A EP90125660 A EP 90125660A EP 0464265 A1 EP0464265 A1 EP 0464265A1
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EP
European Patent Office
Prior art keywords
titanium
mpa
ammonia
temperatures
pressure
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
EP90125660A
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German (de)
English (en)
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EP0464265B1 (fr
Inventor
Friedrich Dr. Preisser
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.)
ALD Vacuum Technologies GmbH
Original Assignee
Degussa GmbH
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Publication date
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP0464265A1 publication Critical patent/EP0464265A1/fr
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    • 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

Definitions

  • the invention relates to a method for applying nitride layers to parts made of titanium and titanium alloys by thermochemical treatment of the parts with ammonia or ammonia-containing gas mixtures under pressure and at temperatures above 500 ° C.
  • titanium As a construction material, titanium has several advantages over steel, which result from its low specific weight, its corrosion resistance and its high strength. This is offset by the relatively low hardness, which makes surface treatment necessary if the wear resistance is to be increased.
  • This surface treatment usually consists of the production of layers of titanium carbide or titanium nitride. In previously known methods for nitriding parts made of titanium and titanium alloys, high-energy gases or electromagnetic fields are used. These processes are very complex and can only be used for simple geometry of the parts to be treated.
  • DE-PS 17 96 212 mentions the surface hardening of titanium by forming nitride layers in an ammonia atmosphere at higher temperatures under normal pressure.
  • EP-OS 0 105 835 describes a process for producing nitride layers on components made of titanium and titanium alloys by exposing the components in an autoclave to pressures of 10 to 500 MPa and temperatures of 200 to 1200 ° C. in an ammonia atmosphere, for example.
  • the ammonia must be of great purity.
  • the nitration is preferably carried out at 90 to 130 MPa and temperatures of 930 ° to 1000 ° C.
  • This process has the disadvantage that it is very expensive due to the use of autoclaves and ammonia of high purity and 20 ⁇ m thick layers only in periods of three and more hours can be reached.
  • This object is achieved in that the treatment is carried out at temperatures from 500 to 1000 ° C and pressures from 0.2 to 10 MPa, the ammonia partial pressure being kept at least at 0.2 MPa.
  • Temperatures of 700 to 950 ° C. and pressures of 0.5 to 7 MPa have proven particularly advantageous, an ammonia partial pressure of at least 0.2 MPa being required.
  • components made of titanium and titanium alloys of any geometry and size can be provided in appropriate chamber furnaces with sufficiently thick nitride layers of 20 ⁇ m and more.
  • no high-purity gases are required for this, but the normal commercial quality of ammonia is sufficient.
  • nitrogen is also possible to add nitrogen to the ammonia, with only an ammonia partial pressure of at least 0.2 MPa being required for the nitriding process.
  • the layer thickness of the titanium nitride that forms depends on the temperature and the treatment time in large pressure ranges.
  • the surface is shiny gold and causes a significant increase in hardness.
  • the layer thickness is almost independent of the pressure.
  • the figure shows the formation of a titanium nitride layer on parts made of pure titanium depending on the pressure and the temperature of the ammonia-containing atmosphere.
  • a TiN layer of, for example, 30 ⁇ m builds up if the samples are kept at 880 ° C for one hour.
  • titanium alloys such as TiA16V4 can be nitrided.
  • An autoclave is not required for these coatings, but the treatment can be carried out in a commercially available chamber furnace.
EP90125660A 1990-07-04 1990-12-28 Procédé de nitruration de titane Expired - Lifetime EP0464265B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4021286A DE4021286C1 (fr) 1990-07-04 1990-07-04
DE4021286 1990-07-04

Publications (2)

Publication Number Publication Date
EP0464265A1 true EP0464265A1 (fr) 1992-01-08
EP0464265B1 EP0464265B1 (fr) 1996-03-06

Family

ID=6409636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125660A Expired - Lifetime EP0464265B1 (fr) 1990-07-04 1990-12-28 Procédé de nitruration de titane

Country Status (14)

Country Link
EP (1) EP0464265B1 (fr)
JP (1) JPH0649924B2 (fr)
CN (1) CN1020476C (fr)
AT (1) ATE135058T1 (fr)
AU (1) AU627960B2 (fr)
BR (1) BR9101899A (fr)
CZ (1) CZ279472B6 (fr)
DE (2) DE4021286C1 (fr)
ES (1) ES2085320T3 (fr)
NO (1) NO905209L (fr)
PL (1) PL166281B1 (fr)
PT (1) PT98195A (fr)
RU (1) RU1836484C (fr)
TW (1) TW208721B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063454A1 (fr) * 1999-04-15 2000-10-26 Vacuumschmelze Gmbh Alliage fer-nickel anti-corrosion pour disjoncteurs de courant de fuite et pieces de mouvements d'horlogerie
WO2008079977A2 (fr) * 2006-12-22 2008-07-03 Iap Research, Inc. Système et procédé de durcissement de métaux réfractaires

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4684383B2 (ja) * 2000-04-03 2011-05-18 株式会社アライドマテリアル 耐酸化層を有する高融点金属材料及びその製造方法
JP2001295023A (ja) * 2000-04-06 2001-10-26 Allied Material Corp 表面硬化層を有する高融点金属材料およびその製造方法
CN101652319B (zh) * 2007-02-28 2014-03-19 沃特世科技公司 具有扩散结合的钛构件的液相色谱装置
JP5977669B2 (ja) * 2012-12-28 2016-08-24 株式会社セブン・セブン 真空断熱二重容器の製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804410A (en) * 1953-10-27 1957-08-27 Nat Lead Co Method for nitriding titanium surfaces

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650532A5 (de) * 1982-09-07 1985-07-31 Ver Drahtwerke Ag Verfahren zur bildung einer haerteschicht im bauteil aus elementen der vierten, fuenften oder sechsten nebengruppen des periodischen systems oder deren legierungen.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804410A (en) * 1953-10-27 1957-08-27 Nat Lead Co Method for nitriding titanium surfaces

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
A.D. MCQUILLAN 'metallurgy of the rare metals -titanium' 1956 , BUTTERWORTHS SCIENTIFIC PUBLICATIONS , LONDON *
CHEMICAL ABSTRACTS, vol. 87, no. 6, 8. August 1977, Columbus, Ohio, US; abstract no. 43169A, HASHIMOTO EIGO 'titanium or its alloy surface hardening by nitriding ' Seite 242 ;Spalte 87 ; *
CHEMICAL ABSTRACTS, vol. 93, no. 6, August 1980, Columbus, Ohio, US; abstract no. 52058Q, GALIEV A.L. 'synthesis of titanium nitride in a nitrogen atmosphere at high pressures and laser irradiation ' Seite 338 ;Spalte 93 ; *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 273 (C-445)(2720) 4. September 1987 & JP-A-62 74 065 (TAIHO KOGYO ) 4. April 1987 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 176 (C-707)(4119) 9. April 1990 & JP-A-2 25 559 (SUMITOMO METAL IND ) 29. Januar 1990 *
TECHNISCHE RUNDSCHAU Bd. 81, Nr. 19, 12. Mai 1989, BERN Seiten 52 - 55; BEAT W. HOFER: 'hochdrucknitrieren von metallen durch hipen ' seite 52,r. spalte,hochdrucknitrieren .... *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063454A1 (fr) * 1999-04-15 2000-10-26 Vacuumschmelze Gmbh Alliage fer-nickel anti-corrosion pour disjoncteurs de courant de fuite et pieces de mouvements d'horlogerie
WO2008079977A2 (fr) * 2006-12-22 2008-07-03 Iap Research, Inc. Système et procédé de durcissement de métaux réfractaires
WO2008079977A3 (fr) * 2006-12-22 2010-12-16 Iap Research, Inc. Système et procédé de durcissement de métaux réfractaires
US9580790B2 (en) 2006-12-22 2017-02-28 Iap Research, Inc. System and method for surface hardening of refractory metals
US10689745B2 (en) 2006-12-22 2020-06-23 Iap Research, Inc. System and method for surface hardening of refractory metals

Also Published As

Publication number Publication date
EP0464265B1 (fr) 1996-03-06
PT98195A (pt) 1992-04-30
CN1057866A (zh) 1992-01-15
NO905209L (no) 1992-01-06
AU627960B2 (en) 1992-09-03
ES2085320T3 (es) 1996-06-01
CN1020476C (zh) 1993-05-05
TW208721B (fr) 1993-07-01
PL290931A1 (en) 1992-10-05
CS198891A3 (en) 1992-02-19
CZ279472B6 (cs) 1995-05-17
DE4021286C1 (fr) 1991-02-21
BR9101899A (pt) 1992-01-14
DE59010178D1 (de) 1996-04-11
ATE135058T1 (de) 1996-03-15
PL166281B1 (pl) 1995-04-28
AU6760290A (en) 1992-01-09
JPH04232247A (ja) 1992-08-20
RU1836484C (ru) 1993-08-23
JPH0649924B2 (ja) 1994-06-29
NO905209D0 (no) 1990-11-30

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