FR2031373A1 - Surface-hardening of oxidn resistant austen - itic steel parts - Google Patents

Surface-hardening of oxidn resistant austen - itic steel parts

Info

Publication number
FR2031373A1
FR2031373A1 FR6903965A FR6903965A FR2031373A1 FR 2031373 A1 FR2031373 A1 FR 2031373A1 FR 6903965 A FR6903965 A FR 6903965A FR 6903965 A FR6903965 A FR 6903965A FR 2031373 A1 FR2031373 A1 FR 2031373A1
Authority
FR
France
Prior art keywords
itic
austen
oxidn
hardening
resistant
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.)
Withdrawn
Application number
FR6903965A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR6903965A priority Critical patent/FR2031373A1/en
Publication of FR2031373A1 publication Critical patent/FR2031373A1/en
Withdrawn legal-status Critical Current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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/52—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 liquids, e.g. salt baths, liquid suspensions more than one element being applied in one step
    • C23C8/54—Carbo-nitriding
    • 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
    • C23C8/26—Nitriding of ferrous surfaces
    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/48—Nitriding
    • C23C8/50—Nitriding of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Two-stage surface treatment process involves an activation stage in which the steel part is heated to from 350-700 degrees C., in a strongly nitrating salt bath based on sodium cyanide and a passivation stage for surface fixation comprising reheating between 400 and 600 degrees C. in an adjusted nitrating atmosphere for several tens of hours. The part is subsequently cooled to ambient temp. and its surface is polished in the customary manner.
FR6903965A 1969-02-17 1969-02-17 Surface-hardening of oxidn resistant austen - itic steel parts Withdrawn FR2031373A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6903965A FR2031373A1 (en) 1969-02-17 1969-02-17 Surface-hardening of oxidn resistant austen - itic steel parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6903965A FR2031373A1 (en) 1969-02-17 1969-02-17 Surface-hardening of oxidn resistant austen - itic steel parts

Publications (1)

Publication Number Publication Date
FR2031373A1 true FR2031373A1 (en) 1970-11-20

Family

ID=9029227

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6903965A Withdrawn FR2031373A1 (en) 1969-02-17 1969-02-17 Surface-hardening of oxidn resistant austen - itic steel parts

Country Status (1)

Country Link
FR (1) FR2031373A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018263A1 (en) * 1979-04-20 1980-10-29 Aubert et Duval S.A. Process for chromizing steel articles, and chromized steel articles
EP0696648A1 (en) * 1994-08-12 1996-02-14 Mitsubishi Jukogyo Kabushiki Kaisha Corrugating roll and manufacturing method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018263A1 (en) * 1979-04-20 1980-10-29 Aubert et Duval S.A. Process for chromizing steel articles, and chromized steel articles
FR2454471A1 (en) * 1979-04-20 1980-11-14 Aubert Et Duval PROCESS FOR CHROMIZING METAL PIECES SUCH AS STEEL PIECES AND CHROMIZED METAL PIECES
US4481264A (en) * 1979-04-20 1984-11-06 Societe Anonyme Dite: Aubert & Duval Method for chromizing metallic pieces such as steel pieces and chromized metallic pieces obtained thereby
EP0696648A1 (en) * 1994-08-12 1996-02-14 Mitsubishi Jukogyo Kabushiki Kaisha Corrugating roll and manufacturing method thereof
US5669988A (en) * 1994-08-12 1997-09-23 Mitsubishi Jukogyo Kabushiki Kaisha Corrugating roll and manufacturing method thereof

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Legal Events

Date Code Title Description
ST Notification of lapse