FR2162654A1 - Accelerated gas nitriding process - for (ferrous) metals using carbon monoxide in ammonical nitriding gas - Google Patents

Accelerated gas nitriding process - for (ferrous) metals using carbon monoxide in ammonical nitriding gas

Info

Publication number
FR2162654A1
FR2162654A1 FR7243905A FR7243905A FR2162654A1 FR 2162654 A1 FR2162654 A1 FR 2162654A1 FR 7243905 A FR7243905 A FR 7243905A FR 7243905 A FR7243905 A FR 7243905A FR 2162654 A1 FR2162654 A1 FR 2162654A1
Authority
FR
France
Prior art keywords
gas
nitriding
metals
ferrous
ammonical
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
FR7243905A
Other languages
French (fr)
Other versions
FR2162654B1 (en
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.)
Barkas Werke VEB
Original Assignee
Barkas Werke VEB
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 Barkas Werke VEB filed Critical Barkas Werke VEB
Publication of FR2162654A1 publication Critical patent/FR2162654A1/en
Application granted granted Critical
Publication of FR2162654B1 publication Critical patent/FR2162654B1/fr
Granted 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
    • 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
    • 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

Abstract

A certain amt. of CO is added to the ammoniacal nitriding gas in the accelerated gas nitriding of metals, esp. ferrous materials, to produce a wear-, pitting-, fatigue- and corrosion-resistant surfance. Effective nitrided zones can be produced in as short a time (up to 4h) as in the bath nitriding process and it is possible to treat parts of any shape and size and in large series. The nitriding gas can contain, e.g. 10% CO and pref. also contains a neutral carrier gas, e.g. N2, Ar etc.
FR7243905A 1971-12-10 1972-12-08 Accelerated gas nitriding process - for (ferrous) metals using carbon monoxide in ammonical nitriding gas Granted FR2162654A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD15948471 1971-12-10

Publications (2)

Publication Number Publication Date
FR2162654A1 true FR2162654A1 (en) 1973-07-20
FR2162654B1 FR2162654B1 (en) 1976-08-20

Family

ID=5484758

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7243905A Granted FR2162654A1 (en) 1971-12-10 1972-12-08 Accelerated gas nitriding process - for (ferrous) metals using carbon monoxide in ammonical nitriding gas

Country Status (3)

Country Link
CH (1) CH580683A5 (en)
DE (1) DE2243301A1 (en)
FR (1) FR2162654A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930444C2 (en) * 1979-07-26 1983-07-21 Honda Giken Kogyo K.K., Tokyo Gas soft nitriding process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD47847A (en) *
FR1399462A (en) * 1963-06-26 1965-05-14 Kokusai Electric Co Ltd Surface treatment process for iron and steel
FR2063287A5 (en) * 1969-09-10 1971-07-09 Peugeot & Renault Gaseous nitriding of steels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD47847A (en) *
FR1399462A (en) * 1963-06-26 1965-05-14 Kokusai Electric Co Ltd Surface treatment process for iron and steel
FR2063287A5 (en) * 1969-09-10 1971-07-09 Peugeot & Renault Gaseous nitriding of steels

Also Published As

Publication number Publication date
DE2243301A1 (en) 1973-06-28
FR2162654B1 (en) 1976-08-20
CH580683A5 (en) 1976-10-15

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Legal Events

Date Code Title Description
ST Notification of lapse