EP0105835B1 - Verfahren zur Bildung einer Härteschicht im Bauteil aus Titan oder Titanlegierungen - Google Patents

Verfahren zur Bildung einer Härteschicht im Bauteil aus Titan oder Titanlegierungen Download PDF

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Publication number
EP0105835B1
EP0105835B1 EP83810395A EP83810395A EP0105835B1 EP 0105835 B1 EP0105835 B1 EP 0105835B1 EP 83810395 A EP83810395 A EP 83810395A EP 83810395 A EP83810395 A EP 83810395A EP 0105835 B1 EP0105835 B1 EP 0105835B1
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EP
European Patent Office
Prior art keywords
titanium
component
autoclave
alloys
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.)
Expired
Application number
EP83810395A
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German (de)
English (en)
French (fr)
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EP0105835A1 (de
Inventor
Paul Brunner
Beat Hofer
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OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Vereinigte Drahtwerke AG
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Publication date
Application filed by Vereinigte Drahtwerke AG filed Critical Vereinigte Drahtwerke AG
Priority to AT83810395T priority Critical patent/ATE31559T1/de
Publication of EP0105835A1 publication Critical patent/EP0105835A1/de
Application granted granted Critical
Publication of EP0105835B1 publication Critical patent/EP0105835B1/de
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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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/048—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material with layers graded in composition or physical properties
    • 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 is based on a method for forming a nitride layer in the edge zone of a component consisting of titanium or titanium alloys.
  • the nitride layer is intended to increase the wear properties of the surface of titanium or its alloys.
  • turbine blades, thread guides in textile machines, balls for prosthetic sockets, wear and corrosion-resistant parts of the apparatus of the chemical industry are made from titanium with a hard surface.
  • Another way of hardening the surface of the titanium component is to immerse it in a molten salt of cyanide at about 800 ° C. Such a treatment creates a mixed crystal zone that contains nitrogen, carbon and small amounts of oxygen.
  • the layer thickness is approx. 0.035 mm with a hardness of 700 HV 0.025 at the outer zone. This is Degussa's well-known Tiduran process.
  • the known ionizing is carried out at treatment temperatures of 400 ° to 600 ° C. With the help of an abnormal glow discharge, nitrogen is generated in ionized form and stored in the workpiece surfaces.
  • the hardness values at the edge are approx. 1 500 HVO, 1 and fall to a depth of 30 ⁇ m to 400 HV O , 1 .
  • GB-PS 1,537,891 describes a method for embroidering hard metal bodies after their sintering. Immediately after sintering, the nitrogen is pressed into the vacancies of the hard metal grid, which tensions the hard metal matrix and improves the cutting properties. A measurable increase in hardness is not achieved.
  • the invention specified in claim 1 is based on the object of cost-effectively remedying the disadvantages of the known methods described above.
  • the object is achieved in a method according to the preamble of claim 1 in that the chemically untreated component in an autoclave with an atmosphere consisting of nitrogen gas or gaseous nitrogen compounds has an isostatic pressure of at least 10 MPa to at most 500 MPa for at least one to at most three hours and is exposed to a temperature of at least 200 ° to a maximum of 1 200 ° C, after which the pressure and the heat in the autoclave are gradually reduced evenly.
  • a continuous, uniformly distributed nitride layer with a thickness of approximately 20 ⁇ m is advantageously formed on the component.
  • the component consisting of chemically untreated titanium or its alloys is placed in an autoclave into which pure nitrogen gas is pumped.
  • the atmosphere in the autoclave can consist of gaseous nitrogen compounds, such as ammonia (NH 3 ) or laughing gas (N 2 0).
  • the titanium component in the autoclave must be exposed to an isostatic pressure of at least 10 MPa and a temperature of at least 200 ° C for at least one hour.
  • the isostatic pressure in the autoclave ensures a continuous, even Distribution of the nitrogen in the surface of the titanium component is ensured at every geometrical location. When cooling down, the pressure and heat drop evenly slowly. As a result, there is no distortion of the component and no uneven tensions in the surface layer.
  • the autoclave is known in the art as "hot isostatic press” and is used for this treatment with some changes in the gas supply and discharge.
  • One or more additional hardening layers can be applied to the titanium nitride layer produced in the above-mentioned method in the edge zone of the titanium component by chemical or physical vapor deposition. This would not be possible without the titanium nitride layer formed first in the edge zone of the titanium component, because the hard layers applied to a component made of titanium, the surface of which was not treated as described above, are subject to peeling abrasion.
  • the nitrogen combines with titanium to form a TiN layer, which is formed in the edge zone of the titanium component and has a thickness of approximately 20 ⁇ m. It is possible to keep the isostatic pressure up to 500 MPa and the temperature up to 1200 ° C during the holding time phase of nitrogen diffusion into the titanium component. The higher these values, the limited the thickness of the nitride layer. There is no material application to the component; the hardness layer grows inside the component.
  • a component of the alloy Ti6 AI4 V was exposed to a pressure of 90 MPa nitrogen and a temperature of 1000 ° C for three hours.
  • the hardness at the edge is 800 HV 0.05 with a layer thickness of 20 J.Lm (see Fig. 1).
  • a component of the alloy Ti6 AI4 V was exposed to a pressure of 130 MPa nitrogen and a temperature of 930 ° C for three hours.
  • the hardness at the edge is 800 HV 0, 05 at a layer thickness of 0.012 mm (see FIG. 2).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Physical Vapour Deposition (AREA)
  • Chemical Vapour Deposition (AREA)
EP83810395A 1982-09-07 1983-08-31 Verfahren zur Bildung einer Härteschicht im Bauteil aus Titan oder Titanlegierungen Expired EP0105835B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83810395T ATE31559T1 (de) 1982-09-07 1983-08-31 Verfahren zur bildung einer haerteschicht im bauteil aus titan oder titanlegierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5313/82 1982-09-07
CH5313/82A CH650532A5 (de) 1982-09-07 1982-09-07 Verfahren zur bildung einer haerteschicht im bauteil aus elementen der vierten, fuenften oder sechsten nebengruppen des periodischen systems oder deren legierungen.

Publications (2)

Publication Number Publication Date
EP0105835A1 EP0105835A1 (de) 1984-04-18
EP0105835B1 true EP0105835B1 (de) 1987-12-23

Family

ID=4291498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810395A Expired EP0105835B1 (de) 1982-09-07 1983-08-31 Verfahren zur Bildung einer Härteschicht im Bauteil aus Titan oder Titanlegierungen

Country Status (8)

Country Link
US (1) US4511411A (xx)
EP (1) EP0105835B1 (xx)
JP (1) JPS59140372A (xx)
AT (1) ATE31559T1 (xx)
CA (1) CA1214364A (xx)
CH (1) CH650532A5 (xx)
DE (1) DE3375027D1 (xx)
IL (1) IL69633A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021286C1 (xx) * 1990-07-04 1991-02-21 Degussa Ag, 6000 Frankfurt, De
DE4139975A1 (de) * 1991-12-04 1993-06-09 Leybold Durferrit Gmbh, 5000 Koeln, De Verfahren zur behandlung von legierten staehlen und refraktaermetallen
DE4208848A1 (de) * 1991-12-04 1993-09-23 Leybold Durferrit Gmbh Verfahren zur thermochemischen nachbehandlung von staehlen und metallen

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6483653A (en) * 1987-09-24 1989-03-29 Fujikura Ltd Wear-resistant member
US5674280A (en) * 1989-12-21 1997-10-07 Smith & Nephew, Inc. Valvular annuloplasty rings of a biocompatible low elastic modulus titanium-niobium-zirconium alloy
US5683442A (en) * 1989-12-21 1997-11-04 Smith & Nephew, Inc. Cardiovascular implants of enhanced biocompatibility
US5509933A (en) * 1989-12-21 1996-04-23 Smith & Nephew Richards, Inc. Medical implants of hot worked, high strength, biocompatible, low modulus titanium alloys
US5573401A (en) * 1989-12-21 1996-11-12 Smith & Nephew Richards, Inc. Biocompatible, low modulus dental devices
US5477864A (en) * 1989-12-21 1995-12-26 Smith & Nephew Richards, Inc. Cardiovascular guidewire of enhanced biocompatibility
SE9001009L (sv) * 1990-03-21 1991-09-22 Ytbolaget I Uppsala Ab Foerfarande foer att bilda ett haart och slitagebestaendigt skikt med god vidhaeftning paa titan eller titanregleringar och produkter, framstaellda enligt foerfarandet
US5123972A (en) * 1990-04-30 1992-06-23 Dana Corporation Hardened insert and brake shoe for backstopping clutch
US5039357A (en) * 1990-06-15 1991-08-13 Dynamic Metal Treating, Inc. Method for nitriding and nitrocarburizing rifle barrels in a fluidized bed furnace
US5292555A (en) * 1990-07-04 1994-03-08 Degussa Aktiengesellschaft Process for applying nitride layers to titanium
US5211768A (en) * 1990-11-15 1993-05-18 Degussa Aktiengesellschaft Method of nitriding work pieces of steel under pressure
US5265137A (en) * 1990-11-26 1993-11-23 Siemens Power Corporation Wear resistant nuclear fuel assembly components
US5298091A (en) * 1991-12-20 1994-03-29 United Technologies Corporation Inhibiting coke formation by heat treating in nitrogen atmosphere
US5254183A (en) * 1991-12-20 1993-10-19 United Techynologies Corporation Gas turbine elements with coke resistant surfaces
US5518820A (en) * 1992-06-16 1996-05-21 General Electric Company Case-hardened titanium aluminide bearing
DE4332912C1 (de) * 1993-09-23 1994-06-01 Johann Grosch Thermochemisches Verfahren zur induktiven Randschichtbehandlung von Bauteilen aus Titan oder Titanlegierungen in stickstoffhaltigen Atmosphären
AU2227595A (en) * 1994-03-17 1995-10-03 Teledyne Industries, Inc. Composite article, alloy and method
US5820707A (en) * 1995-03-17 1998-10-13 Teledyne Industries, Inc. Composite article, alloy and method
DE19637450C1 (de) * 1996-09-13 1998-01-15 Fraunhofer Ges Forschung Verschleißbeständiger, mechanisch hochbelastbarer und reibungsarmer Randschichtaufbau für Titan und dessen Legierungen sowie Verfahren zu seiner Herstellung
US5954724A (en) 1997-03-27 1999-09-21 Davidson; James A. Titanium molybdenum hafnium alloys for medical implants and devices
US6238491B1 (en) 1999-05-05 2001-05-29 Davitech, Inc. Niobium-titanium-zirconium-molybdenum (nbtizrmo) alloys for dental and other medical device applications
US7338529B1 (en) 2004-03-30 2008-03-04 Biomet Manufacturing Corp. Methods and apparatuses for enhancing prosthetic implant durability
GB2412701B (en) 2004-03-31 2006-03-22 Minebea Co Ltd A metal-to-metal spherical bearing
US7833339B2 (en) * 2006-04-18 2010-11-16 Franklin Industrial Minerals Mineral filler composition
DE102008030186A1 (de) * 2008-06-26 2009-12-31 Siemens Aktiengesellschaft Verfahren zum Erzeugen eines Bauteils durch selektives Laserschmelzen sowie hierfür geeignete Prozesskammer
GB2497354B (en) * 2011-12-07 2014-09-24 Solaris Holdings Ltd Method of improvement of mechanical properties of products made of metals and alloys
CN104711632A (zh) * 2013-12-13 2015-06-17 中国科学院大连化学物理研究所 一种用于氧碘化学激光器原料再生的电化学反应器及再生方法
SE540497C2 (en) * 2016-05-23 2018-09-25 Sentinabay Ab Method of treating a workpiece comprising a titanium metal and object
WO2022170009A1 (en) 2021-02-05 2022-08-11 Xylem Water Solutions U.S.A., Inc. System and method for recovering resources from wastewater streams

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793309A (en) * 1930-02-26 1931-02-17 Electro Metallurg Co Process of case hardening
DE970456C (de) * 1952-11-11 1958-09-18 Metallgesellschaft Ag Verfahren zur Herstellung von UEberzuegen aus hochschmelzenden Nitriden auf Metallen
JPS4991074A (xx) * 1972-12-29 1974-08-30
AT342324B (de) * 1975-02-28 1978-03-28 Plansee Metallwerk Gebrauchs- und schmuckartikel
JPS52145343A (en) * 1976-05-29 1977-12-03 Kiyoichi Ogawa Pressurized nitriding
DE2717842C2 (de) * 1977-04-22 1983-09-01 Fried. Krupp Gmbh, 4300 Essen Verfahren zur Oberflächenbehandlung von gesinterten Hartmetallkörpern

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021286C1 (xx) * 1990-07-04 1991-02-21 Degussa Ag, 6000 Frankfurt, De
DE4139975A1 (de) * 1991-12-04 1993-06-09 Leybold Durferrit Gmbh, 5000 Koeln, De Verfahren zur behandlung von legierten staehlen und refraktaermetallen
DE4208848A1 (de) * 1991-12-04 1993-09-23 Leybold Durferrit Gmbh Verfahren zur thermochemischen nachbehandlung von staehlen und metallen
DE4139975C2 (de) * 1991-12-04 2001-02-22 Ald Vacuum Techn Ag Verfahren zur Behandlung von legierten Stählen und Refraktärmetallen und Anwendung des Verfahrens
DE4208848C2 (de) * 1991-12-04 2001-08-30 Ald Vacuum Techn Ag Verfahren zur thermochemischen Nachbehandlung von Stählen und Metallen

Also Published As

Publication number Publication date
IL69633A (en) 1987-02-27
US4511411A (en) 1985-04-16
DE3375027D1 (en) 1988-02-04
ATE31559T1 (de) 1988-01-15
CA1214364A (en) 1986-11-25
CH650532A5 (de) 1985-07-31
JPS59140372A (ja) 1984-08-11
IL69633A0 (en) 1983-12-30
EP0105835A1 (de) 1984-04-18

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