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DE59204598D1 - Processes for the treatment of steels and refractory metals. - Google Patents

Processes for the treatment of steels and refractory metals.

Info

Publication number
DE59204598D1
DE59204598D1 DE59204598T DE59204598T DE59204598D1 DE 59204598 D1 DE59204598 D1 DE 59204598D1 DE 59204598 T DE59204598 T DE 59204598T DE 59204598 T DE59204598 T DE 59204598T DE 59204598 D1 DE59204598 D1 DE 59204598D1
Authority
DE
Germany
Prior art keywords
steels
processes
treatment
temperature
refractory metals
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 - Fee Related
Application number
DE59204598T
Other languages
German (de)
Inventor
Albrecht Dr Melber
Peter Dr Minarski
Friedrich Dr Preisser
Klaus Dr Zimmermann
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
Leybold Durferrit GmbH
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 DE4139975A external-priority patent/DE4139975C2/en
Application filed by Leybold Durferrit GmbH filed Critical Leybold Durferrit GmbH
Application granted granted Critical
Publication of DE59204598D1 publication Critical patent/DE59204598D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C23C8/02—Pretreatment of the material to be coated
    • 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
    • C23C8/80—After-treatment

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)
  • Heat Treatment Of Articles (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)

Abstract

Method for treating steels and metals, especially for depassivating and subsequent thermochemical surface treatment in a process chamber (1,2) under the influence of pressure and temperature, wherein, in a first process step, a first gas or gas mixture selected from the group N2, H2 or NH3 is introduced in a process chamber (1) for the purpose of depassivation, a pressure greater than 1 bar absolute and a temperature between 100 DEG C and 1,000 DEG C being settable in the chamber (1), and in a second process step a second gas or gas mixture selected from the group of N-, C- or B-containing gases is introduced into a process chamber (1,2) for the purpose of thermochemical surface treatment, and a temperature between 100 DEG C and 1,000 DEG C at a pressure greater than or equal to 1 bar absolute being settable. <IMAGE>
DE59204598T 1991-12-04 1992-10-27 Processes for the treatment of steels and refractory metals. Expired - Fee Related DE59204598D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4139975A DE4139975C2 (en) 1991-12-04 1991-12-04 Process for the treatment of alloyed steels and refractory metals and application of the process
DE4208848A DE4208848C2 (en) 1991-12-04 1992-03-19 Process for the thermochemical after-treatment of steels and metals

Publications (1)

Publication Number Publication Date
DE59204598D1 true DE59204598D1 (en) 1996-01-18

Family

ID=25909771

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4208848A Expired - Fee Related DE4208848C2 (en) 1991-12-04 1992-03-19 Process for the thermochemical after-treatment of steels and metals
DE59204598T Expired - Fee Related DE59204598D1 (en) 1991-12-04 1992-10-27 Processes for the treatment of steels and refractory metals.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4208848A Expired - Fee Related DE4208848C2 (en) 1991-12-04 1992-03-19 Process for the thermochemical after-treatment of steels and metals

Country Status (5)

Country Link
EP (1) EP0545069B1 (en)
JP (1) JPH0665631A (en)
AT (1) ATE131216T1 (en)
DE (2) DE4208848C2 (en)
ES (1) ES2080416T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0707661B1 (en) * 1994-04-22 2000-03-15 Innovatique S.A. Method of low pressure nitriding a metal workpiece and oven for carrying out said method
FR2719057B1 (en) * 1994-04-22 1996-08-23 Innovatique Sa Process for the nitriding at low pressure of a metallic part and oven for the implementation of said process.
DE10147205C1 (en) * 2001-09-25 2003-05-08 Bosch Gmbh Robert Process for the heat treatment of workpieces made of temperature-resistant steels
PL204747B1 (en) 2002-10-31 2010-02-26 Politechnika & Lstrok Odzka Method of metal product carburization under negative pressure
DE102009002985A1 (en) * 2009-05-11 2010-11-18 Robert Bosch Gmbh Process for carbonitriding

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE738244C (en) * 1939-02-02 1943-08-07 Messerschmitt Boelkow Blohm Process and device for nitriding steel
US2851387A (en) * 1957-05-08 1958-09-09 Chapman Valve Mfg Co Method of depassifying high chromium steels prior to nitriding
DE1933439A1 (en) * 1968-07-01 1970-01-15 Gen Electric Nitriding process for surface hardening stainless steels - without the use of activators
GB1495703A (en) * 1973-12-12 1977-12-21 Gkn Group Services Ltd Nitriding of ferrous metals
DE2510460A1 (en) * 1975-03-11 1976-09-23 Ipsen Ind Int Gmbh METHOD FOR HEAT TREATMENT OF WORKPIECES MADE OF STEEL WITHOUT THE FORMATION OF RAND OXYDES OF THE ALLOY ELEMENTS
PL192437A1 (en) * 1976-09-16 1978-03-28 Inst Mech Precyz METHOD OF HEAT AND CHEMICAL TREATMENT OF METAL
CH650532A5 (en) * 1982-09-07 1985-07-31 Ver Drahtwerke Ag METHOD FOR FORMING A HARD COATING IN THE COMPONENT FROM ELEMENTS OF THE FOURTH, FIFTH OR SIX SUB-GROUPS OF THE PERIODIC SYSTEM OR ITS ALLOYS.
GB8608717D0 (en) * 1986-04-10 1986-05-14 Lucas Ind Plc Metal components
JP2732403B2 (en) * 1988-10-27 1998-03-30 財団法人応用科学研究所 Ammonia gas nitriding method for non-nitridable metal materials
DE69009603T2 (en) * 1989-07-10 1995-01-12 Daido Oxygen Process for the pretreatment of metallic workpieces and the nitriding hardening of steel.
DE4139975C2 (en) * 1991-12-04 2001-02-22 Ald Vacuum Techn Ag Process for the treatment of alloyed steels and refractory metals and application of the process

Also Published As

Publication number Publication date
ES2080416T3 (en) 1996-02-01
EP0545069B1 (en) 1995-12-06
DE4208848C2 (en) 2001-08-30
DE4208848A1 (en) 1993-09-23
ATE131216T1 (en) 1995-12-15
JPH0665631A (en) 1994-03-08
EP0545069A1 (en) 1993-06-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ALD VACUUM TECHNOLOGIES GMBH, 63526 ERLENSEE, DE

8327 Change in the person/name/address of the patent owner

Owner name: ALD VACUUM TECHNOLOGIES AG, 63450 HANAU, DE

8339 Ceased/non-payment of the annual fee