GB1011580A - Surface treatment of mild steel - Google Patents

Surface treatment of mild steel

Info

Publication number
GB1011580A
GB1011580A GB3461861A GB3461861A GB1011580A GB 1011580 A GB1011580 A GB 1011580A GB 3461861 A GB3461861 A GB 3461861A GB 3461861 A GB3461861 A GB 3461861A GB 1011580 A GB1011580 A GB 1011580A
Authority
GB
United Kingdom
Prior art keywords
mild steel
surface treatment
carbon
nitrogen
layer containing
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
GB3461861A
Inventor
Eric Mitchell
Cyril Dawes
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries Ltd
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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB3461861A priority Critical patent/GB1011580A/en
Publication of GB1011580A publication Critical patent/GB1011580A/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
    • C23C8/06—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

Mild steel containing up to 0.2% of carbon is heated in an atmosphere of ammonia between 450 DEG C. and 590 DEG C. to form a surface layer containing iron nitride and below it a layer containing nitrogen in solid solution, the steel then being cooled sufficiently rapidly to retain the nitrogen in solution. The nitriding atmosphere may also contain a hydrocarbon or other carbon containing gas.
GB3461861A 1961-09-27 1961-09-27 Surface treatment of mild steel Expired GB1011580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3461861A GB1011580A (en) 1961-09-27 1961-09-27 Surface treatment of mild steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3461861A GB1011580A (en) 1961-09-27 1961-09-27 Surface treatment of mild steel

Publications (1)

Publication Number Publication Date
GB1011580A true GB1011580A (en) 1965-12-01

Family

ID=10367896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3461861A Expired GB1011580A (en) 1961-09-27 1961-09-27 Surface treatment of mild steel

Country Status (1)

Country Link
GB (1) GB1011580A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5714015A (en) * 1996-04-22 1998-02-03 Frantz Manufacturing Ferritic nitrocarburization process for steel balls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5714015A (en) * 1996-04-22 1998-02-03 Frantz Manufacturing Ferritic nitrocarburization process for steel balls

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