GB1084426A - Improvements in the coating of metals - Google Patents

Improvements in the coating of metals

Info

Publication number
GB1084426A
GB1084426A GB10350/66A GB1035066A GB1084426A GB 1084426 A GB1084426 A GB 1084426A GB 10350/66 A GB10350/66 A GB 10350/66A GB 1035066 A GB1035066 A GB 1035066A GB 1084426 A GB1084426 A GB 1084426A
Authority
GB
United Kingdom
Prior art keywords
solution containing
hexavalent chromium
zinc surface
containing hexavalent
phosphate
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
GB10350/66A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co 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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB1084426A publication Critical patent/GB1084426A/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
    • C23C22/40—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 molybdates, tungstates or vanadates
    • C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides
    • 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
    • C23C22/30—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 containing also trivalent chromium
    • 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
    • C23C22/34—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 fluorides or complex fluorides
    • C23C22/37—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 fluorides or complex fluorides containing also hexavalent chromium compounds

Abstract

A chromate coating is formed on a zinc surface by applying an aqueous acidic solution containing hexavalent chromium and fluoride ions, and an activator in the form of tungstate, molybdate, vanadate or uranate, and then rinsing in a solution containing hexavalent chromium ion. The first solution may also include arsenate ions, a buffering agent e.g. boric or silicic acid, and aluminium fluoride. The pH is 1.3 to 3.2, and nitric, sulphuric, and hydrochloric acids may be added to adjust the pH. The zinc surface may be first cleaned with an alkali metal hydroxide, phosphate or silicate e.g. 50% sodium metasilicate and 50% trisodium phosphate.
GB10350/66A 1965-03-09 1966-03-09 Improvements in the coating of metals Expired GB1084426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US438377A US3404044A (en) 1965-03-09 1965-03-09 Method for forming improved coating on metal

Publications (1)

Publication Number Publication Date
GB1084426A true GB1084426A (en) 1967-09-20

Family

ID=23740415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10350/66A Expired GB1084426A (en) 1965-03-09 1966-03-09 Improvements in the coating of metals

Country Status (7)

Country Link
US (1) US3404044A (en)
AT (1) AT264948B (en)
BE (1) BE677600A (en)
DE (1) DE1521870A1 (en)
ES (1) ES324020A1 (en)
GB (1) GB1084426A (en)
NL (1) NL6603082A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2102374A1 (en) * 1970-08-19 1972-04-07 Amchem Prod

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146410A (en) * 1977-03-02 1979-03-27 Amchem Products, Inc. Non-ferricyanide chromate conversion coating for aluminum surfaces
JPS5698480A (en) * 1980-01-11 1981-08-07 Kobe Steel Ltd Rust preventive treatment of galvanized steel material
US4328047A (en) * 1980-11-25 1982-05-04 Dalton William E Method for inducing a passive surface on beryllium
US4676842A (en) * 1986-04-04 1987-06-30 Robert Haydu Protective coating for metals
US7204871B2 (en) 2005-05-24 2007-04-17 Wolverine Plating Corp. Metal plating process
US20090242081A1 (en) * 2008-03-26 2009-10-01 Richard Bauer Aluminum Treatment Composition
US10876211B2 (en) 2011-09-16 2020-12-29 Prc-Desoto International, Inc. Compositions for application to a metal substrate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499231A (en) * 1944-08-25 1950-02-28 United Chromium Inc Method of producing surface conversion coatings on zinc
US2494909A (en) * 1947-02-28 1950-01-17 American Chem Paint Co Method of coating copper, brass, terneplate, magnesium, zinciferous and ferriferous metals
US2773623A (en) * 1954-06-01 1956-12-11 Heintz Mfg Co Corrosion resistant coated steel members and method of making
US2948643A (en) * 1958-01-22 1960-08-09 Turco Products Inc Process and compositions for producing aluminum surface conversion coatings
US3009842A (en) * 1960-03-21 1961-11-21 Amchem Prod Method of and material for applying chromate conversion coatings on aluminum
US3097978A (en) * 1961-08-17 1963-07-16 Isaac L Newell Method of coating zinc surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2102374A1 (en) * 1970-08-19 1972-04-07 Amchem Prod

Also Published As

Publication number Publication date
ES324020A1 (en) 1967-01-16
US3404044A (en) 1968-10-01
AT264948B (en) 1968-09-25
NL6603082A (en) 1966-09-12
DE1521870A1 (en) 1969-10-23
BE677600A (en) 1966-08-01

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