GB570054A - Forming protective surface coatings on metals - Google Patents

Forming protective surface coatings on metals

Info

Publication number
GB570054A
GB570054A GB1866743A GB1866743A GB570054A GB 570054 A GB570054 A GB 570054A GB 1866743 A GB1866743 A GB 1866743A GB 1866743 A GB1866743 A GB 1866743A GB 570054 A GB570054 A GB 570054A
Authority
GB
United Kingdom
Prior art keywords
chromate
metal
zinc
chemically
absorbent coating
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
GB1866743A
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.)
High Duty Alloys Ltd
Original Assignee
High Duty Alloys 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 High Duty Alloys Ltd filed Critical High Duty Alloys Ltd
Priority to GB1866743A priority Critical patent/GB570054A/en
Publication of GB570054A publication Critical patent/GB570054A/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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

Abstract

570,054. Preventing corrosion. HIGH DUTY ALLOYS, Ltd., and WHITBY, L. Nov. 10, 1943, No. 18667. [Class 123 (i)] [Also in Group III] Metal surfaces, especially magnesium and aluminium base alloys are protected by chemically or electro-chemically forming an absorbent coating to serve as a porous matrix and precipitating a sparingly soluble chromate, e.g. zinc chromate, in the matrix by a double decomposition reaction, using solutions of chromate or dichromate and of a salt of the metal whose chromate is required. The metal with the absorbent coating is dipped into a boiling sodium chromate, rinsed and then immersed into a boiling solution of a soluble salt (other than chloride) of zinc, barium, calcium or strontium. Basic chromates may be similarly formed. The metal may be redipped and finally coated with a clear varnish. Specification 543,726, (Group XXXVI], is referred to.
GB1866743A 1943-11-10 1943-11-10 Forming protective surface coatings on metals Expired GB570054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1866743A GB570054A (en) 1943-11-10 1943-11-10 Forming protective surface coatings on metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1866743A GB570054A (en) 1943-11-10 1943-11-10 Forming protective surface coatings on metals

Publications (1)

Publication Number Publication Date
GB570054A true GB570054A (en) 1945-06-20

Family

ID=10116376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1866743A Expired GB570054A (en) 1943-11-10 1943-11-10 Forming protective surface coatings on metals

Country Status (1)

Country Link
GB (1) GB570054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964433A (en) * 1957-12-13 1960-12-13 Nat Steel Corp Process for inhibiting corrosion and product
US2964432A (en) * 1957-12-13 1960-12-13 Nat Steel Corp Process for treating metals and product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964433A (en) * 1957-12-13 1960-12-13 Nat Steel Corp Process for inhibiting corrosion and product
US2964432A (en) * 1957-12-13 1960-12-13 Nat Steel Corp Process for treating metals and product

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