GB398834A - Improvements in and relating to the nitrogenisation of ferrous austenitic alloys - Google Patents

Improvements in and relating to the nitrogenisation of ferrous austenitic alloys

Info

Publication number
GB398834A
GB398834A GB7559/32A GB755932A GB398834A GB 398834 A GB398834 A GB 398834A GB 7559/32 A GB7559/32 A GB 7559/32A GB 755932 A GB755932 A GB 755932A GB 398834 A GB398834 A GB 398834A
Authority
GB
United Kingdom
Prior art keywords
nickel
chromium
per cent
nitrogenisation
relating
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
GB7559/32A
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.)
COMMENTRY FOURCHAMBAULT ET DEC
Original Assignee
COMMENTRY FOURCHAMBAULT ET DEC
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 COMMENTRY FOURCHAMBAULT ET DEC filed Critical COMMENTRY FOURCHAMBAULT ET DEC
Publication of GB398834A publication Critical patent/GB398834A/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
    • 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

Abstract

Ferrous austenitic alloys containing nickel or nickel and chromium, in which the iron is in the g state and which contain one or more of up to 1 per cent, of carbon, up to 7 of aluminium, up to 20 of copper, up to 5 of silicon, up to 10 of tungsten, up to 10 of molybdenum, up to 2 of vanadium, up to 2 of titanium, up to 2 of zirconium, up to 4 of boron are nitrogenized at 550-950 DEG C., preferably at higher than 600 DEG C. In particular alloys containing 6-80 per cent of nickel (or nickel and cobalt) 0-40 of chromium and 0,3-4 of manganese are referred to. The alloys may then be annealed in a vacuum and may be subjected to the thermal and/or mechanical treatments described in Specification 371,334. In an example, an alloy containing 0,33 per cent of carbon, 0,88 of silicon, 1,28 of manganese, 30,52 of nickel, 15,22 of chromium, 2,40 of aluminium, and 0,45 of molybdenum is heated to 1000 DEG C. cooled in air for half an hour and then nitrogenized for 48 hours at 650 DEG C.
GB7559/32A 1931-03-14 1932-03-14 Improvements in and relating to the nitrogenisation of ferrous austenitic alloys Expired GB398834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR398834X 1931-03-14

Publications (1)

Publication Number Publication Date
GB398834A true GB398834A (en) 1933-09-14

Family

ID=8896644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7559/32A Expired GB398834A (en) 1931-03-14 1932-03-14 Improvements in and relating to the nitrogenisation of ferrous austenitic alloys

Country Status (1)

Country Link
GB (1) GB398834A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084382A5 (en) * 1970-03-09 1971-12-17 Allegheny Ludlum Ind Inc
US4382829A (en) 1979-12-05 1983-05-10 Nippon Kokan Kabushiki Kaisha Austenite alloy tubes having excellent high temperature vapor oxidation resistant property
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings
WO2004104245A2 (en) * 2003-05-20 2004-12-02 Exxonmobil Research And Engineering Company Composition gradient cermets and reactive heat treatment process for preparing same
US7431777B1 (en) 2003-05-20 2008-10-07 Exxonmobil Research And Engineering Company Composition gradient cermets and reactive heat treatment process for preparing same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084382A5 (en) * 1970-03-09 1971-12-17 Allegheny Ludlum Ind Inc
US4382829A (en) 1979-12-05 1983-05-10 Nippon Kokan Kabushiki Kaisha Austenite alloy tubes having excellent high temperature vapor oxidation resistant property
GB2148941A (en) * 1983-09-15 1985-06-05 Welsh Nat School Med Improvements in and relating to steel castings
WO2004104245A2 (en) * 2003-05-20 2004-12-02 Exxonmobil Research And Engineering Company Composition gradient cermets and reactive heat treatment process for preparing same
WO2004104245A3 (en) * 2003-05-20 2005-07-07 Exxonmobil Res & Eng Co Composition gradient cermets and reactive heat treatment process for preparing same
US7431777B1 (en) 2003-05-20 2008-10-07 Exxonmobil Research And Engineering Company Composition gradient cermets and reactive heat treatment process for preparing same

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