GB1061435A - Improvements in or relating to solutions and processes for the coating of zinc and its alloys - Google Patents

Improvements in or relating to solutions and processes for the coating of zinc and its alloys

Info

Publication number
GB1061435A
GB1061435A GB33176/63A GB3317663A GB1061435A GB 1061435 A GB1061435 A GB 1061435A GB 33176/63 A GB33176/63 A GB 33176/63A GB 3317663 A GB3317663 A GB 3317663A GB 1061435 A GB1061435 A GB 1061435A
Authority
GB
United Kingdom
Prior art keywords
solutions
calculated
coating
alloys
alkali
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
GB33176/63A
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.)
Henkel Corp
Original Assignee
Amchem Products Inc
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 Amchem Products Inc filed Critical Amchem Products Inc
Publication of GB1061435A publication Critical patent/GB1061435A/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
    • C23C22/34—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Aqueous acidic alkali-free solutions for chromating surfaces of Zn and its alloys, e.g. galvanized or electrodeposited Zn, contain at least 3.0 g/l of Zn2+ (calculated as Zn), from 5.0 to 75 g/l of Cr6+ (calculated as CrO3), at least 1 g/l of complex fluoride radical, and at least 1 g/l of Cl- (calculated as Cl), the solutions having a pH maintained between 0.57 and 3.0. "Alkali-free" means excluding alkali metal, alkaline-earth metal and ammonium ions. The solutions may also contain HNO3 or its Zn salt and/or trivalent Cr. The constituents may be provided by ZnO, ZnCl2, Zn bichromate or ZnSiF6; CrO3 or a Zn salt thereof; HBF4, H2SiF6, H2TiF6 and/or their Zn salts; and HCl. The coating solutions are applied to Zn or Zn alloy surfaces by spraying, dipping or roller coating. The solution temperature may be 12 to 65 DEG C. and the contact time may be 5 to 30 secs. The metal may be precleaned, chromated, water rinsed, air-dried, coated with a siccative finish and baked.
GB33176/63A 1963-06-04 1963-08-21 Improvements in or relating to solutions and processes for the coating of zinc and its alloys Expired GB1061435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US285222A US3130085A (en) 1963-06-04 1963-06-04 Method and materials for applying chromate conversion coatings on zinciferous surfaces

Publications (1)

Publication Number Publication Date
GB1061435A true GB1061435A (en) 1967-03-15

Family

ID=23093307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33176/63A Expired GB1061435A (en) 1963-06-04 1963-08-21 Improvements in or relating to solutions and processes for the coating of zinc and its alloys

Country Status (5)

Country Link
US (1) US3130085A (en)
BE (1) BE637718A (en)
DE (1) DE1521656B2 (en)
GB (1) GB1061435A (en)
NL (2) NL125963C (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 (4)

* 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
GB8507181D0 (en) * 1985-03-20 1985-04-24 Omi International Benelux Bv Passivation
DE3833119A1 (en) * 1988-09-29 1990-04-12 Sep Tech Studien METHOD FOR CHROMING AND LACQUERING METAL SURFACES WITH WATER-DETUMABLE VARNISHES
EP0487200B1 (en) * 1990-11-14 2000-06-21 Titeflex Corporation Fluoropolymer aluminium laminate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276353A (en) * 1935-09-28 1942-03-17 Parker Rust Proof Co Process of coating
US2762731A (en) * 1952-03-29 1956-09-11 American Chem Paint Co Method of and materials for producing paint bonding films on ferriferous metal surfaces
US2786002A (en) * 1954-04-28 1957-03-19 American Chem Paint Co Method of treating zinciferous surfaces
US2948643A (en) * 1958-01-22 1960-08-09 Turco Products Inc Process and compositions for producing aluminum surface conversion coatings

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
US3130085A (en) 1964-04-21
NL125963C (en)
DE1521656B2 (en) 1971-04-01
NL297691A (en)
BE637718A (en)
DE1521656A1 (en) 1969-09-25

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