GB465509A - Process for the passivation of ferrous metals - Google Patents

Process for the passivation of ferrous metals

Info

Publication number
GB465509A
GB465509A GB21971/35A GB2197135A GB465509A GB 465509 A GB465509 A GB 465509A GB 21971/35 A GB21971/35 A GB 21971/35A GB 2197135 A GB2197135 A GB 2197135A GB 465509 A GB465509 A GB 465509A
Authority
GB
United Kingdom
Prior art keywords
oxygen
partial pressure
passivation
low
ferrous metals
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
GB21971/35A
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.)
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Original Assignee
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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 Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU filed Critical Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Publication of GB465509A publication Critical patent/GB465509A/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
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces

Abstract

Iron, steel and iron alloys, containing for example nickel or chromium, are rendered passive by heating in oxygen at a low partial pressure to form a thin, compact, adherent oxide layer. A low partial pressure may be obtained by the use of oxygen alone at a low pressure, by dilution of air or oxygen with nitrogen, or by using gaseous oxygen compounds dissociating at the temperature used to give a suitable partial pressure; such compounds may be used alone, in admixture with each other or diluted with other gases.
GB21971/35A 1934-08-06 1935-08-02 Process for the passivation of ferrous metals Expired GB465509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR465509X 1934-08-06

Publications (1)

Publication Number Publication Date
GB465509A true GB465509A (en) 1937-05-07

Family

ID=8902101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21971/35A Expired GB465509A (en) 1934-08-06 1935-08-02 Process for the passivation of ferrous metals

Country Status (1)

Country Link
GB (1) GB465509A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193888A (en) * 1961-08-29 1965-07-13 Aluminium Lab Ltd Continuous casting apparatus including endless steel belt with red iron oxide coating
RU2478137C2 (en) * 2011-06-29 2013-03-27 Открытое акционерное общество "АВТОВАЗ" Method of thermochemical treatment of steel articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193888A (en) * 1961-08-29 1965-07-13 Aluminium Lab Ltd Continuous casting apparatus including endless steel belt with red iron oxide coating
RU2478137C2 (en) * 2011-06-29 2013-03-27 Открытое акционерное общество "АВТОВАЗ" Method of thermochemical treatment of steel articles

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