GB675024A - The production of oxalate coatings on metals - Google Patents

The production of oxalate coatings on metals

Info

Publication number
GB675024A
GB675024A GB2227049A GB2227049A GB675024A GB 675024 A GB675024 A GB 675024A GB 2227049 A GB2227049 A GB 2227049A GB 2227049 A GB2227049 A GB 2227049A GB 675024 A GB675024 A GB 675024A
Authority
GB
United Kingdom
Prior art keywords
oxalate
chromium
treatment
ferric
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
GB2227049A
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.)
Parker Rust Proof Co
Original Assignee
Parker Rust Proof Co
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 Parker Rust Proof Co filed Critical Parker Rust Proof Co
Priority to GB2227049A priority Critical patent/GB675024A/en
Publication of GB675024A publication Critical patent/GB675024A/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
    • C23C22/46—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 oxalates

Abstract

A continuous, closely adherent oxalate coating is formed on a surface composed of nickel, chromium or an alloy containing nickel or chromium or both in a total amount of at least 8 per cent by treatment with an aqueous solution of oxalic acid, ferric oxalic and one or more of a bromide, erricyanide and thiocyanate, preferably at a temperature between 150 DEG F. and boiling point. One or more of a sulphide, sulphite and thiosulphate may be present as an accelerator and the ferric oxalate may be formed in situ by reaction between ferrous oxalate and an oxidizing agent such as sodium bromate or chlorate. The treatment may be effected by immersion or spraying.
GB2227049A 1949-08-26 1949-08-26 The production of oxalate coatings on metals Expired GB675024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2227049A GB675024A (en) 1949-08-26 1949-08-26 The production of oxalate coatings on metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2227049A GB675024A (en) 1949-08-26 1949-08-26 The production of oxalate coatings on metals

Publications (1)

Publication Number Publication Date
GB675024A true GB675024A (en) 1952-07-02

Family

ID=10176653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2227049A Expired GB675024A (en) 1949-08-26 1949-08-26 The production of oxalate coatings on metals

Country Status (1)

Country Link
GB (1) GB675024A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800421A (en) * 1954-05-28 1957-07-23 Parker Rust Proof Co Composition and method for coating stainless metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800421A (en) * 1954-05-28 1957-07-23 Parker Rust Proof Co Composition and method for coating stainless metals

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