FR832416A - Process for the protection of ferrous chromium alloys - Google Patents

Process for the protection of ferrous chromium alloys

Info

Publication number
FR832416A
FR832416A FR832416DA FR832416A FR 832416 A FR832416 A FR 832416A FR 832416D A FR832416D A FR 832416DA FR 832416 A FR832416 A FR 832416A
Authority
FR
France
Prior art keywords
protection
chromium alloys
ferrous
ferrous chromium
alloys
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
Other languages
French (fr)
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.)
HAUTS FOURNEAUX SA
Original Assignee
HAUTS FOURNEAUX SA
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 HAUTS FOURNEAUX SA filed Critical HAUTS FOURNEAUX SA
Application granted granted Critical
Publication of FR832416A publication Critical patent/FR832416A/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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
FR832416D 1937-05-03 1937-05-03 Process for the protection of ferrous chromium alloys Expired FR832416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR832416T 1937-05-03

Publications (1)

Publication Number Publication Date
FR832416A true FR832416A (en) 1938-09-27

Family

ID=9295960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR832416D Expired FR832416A (en) 1937-05-03 1937-05-03 Process for the protection of ferrous chromium alloys

Country Status (1)

Country Link
FR (1) FR832416A (en)

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