GB912018A - Nitriding process - Google Patents

Nitriding process

Info

Publication number
GB912018A
GB912018A GB3416659A GB3416659A GB912018A GB 912018 A GB912018 A GB 912018A GB 3416659 A GB3416659 A GB 3416659A GB 3416659 A GB3416659 A GB 3416659A GB 912018 A GB912018 A GB 912018A
Authority
GB
United Kingdom
Prior art keywords
nitriding
steel
alkali metal
bath
nitriding process
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
GB3416659A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB912018A publication Critical patent/GB912018A/en
Expired 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
    • C23C8/42—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
    • 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

Abstract

A process of nitriding steel articles comprises treating the steel in a soft nitriding bath containing more than 30% alkali metal cyanates to produce a surface layer at least 0.3 mm. thick and containing at least 0.01% dissolved nitrogen. The bath may contain alkali metal cyanides and carbonates and may be held at 570 DEG C. After nitriding the steel may be rapidly cooled by quenching.
GB3416659A 1958-10-08 1959-10-08 Nitriding process Expired GB912018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED29105A DE1191655B (en) 1958-10-08 1958-10-08 Process for increasing the fatigue strength of low-alloy or unalloyed steels by nitriding

Publications (1)

Publication Number Publication Date
GB912018A true GB912018A (en) 1962-12-05

Family

ID=7039956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3416659A Expired GB912018A (en) 1958-10-08 1959-10-08 Nitriding process

Country Status (3)

Country Link
CH (1) CH377167A (en)
DE (1) DE1191655B (en)
GB (1) GB912018A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3371335A4 (en) * 2015-11-02 2019-06-19 Applied Nano Surfaces Sweden AB Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018211063A1 (en) * 2018-07-04 2020-01-09 Magna Pt B.V. & Co. Kg Manufacturing process for a steel plate of a plate clutch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3371335A4 (en) * 2015-11-02 2019-06-19 Applied Nano Surfaces Sweden AB Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing
US10704111B2 (en) 2015-11-02 2020-07-07 Applied Nano Surfaces Sweden Ab Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing

Also Published As

Publication number Publication date
DE1191655B (en) 1965-04-22
CH377167A (en) 1964-04-30

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