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GB1425380A - Compositions and processes for producing chromium conversion coa tings - Google Patents

Compositions and processes for producing chromium conversion coa tings

Info

Publication number
GB1425380A
GB1425380A GB4116873A GB4116873A GB1425380A GB 1425380 A GB1425380 A GB 1425380A GB 4116873 A GB4116873 A GB 4116873A GB 4116873 A GB4116873 A GB 4116873A GB 1425380 A GB1425380 A GB 1425380A
Authority
GB
United Kingdom
Prior art keywords
compositions
processes
chromium conversion
producing chromium
tings
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
GB4116873A
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.)
Dominion Foundries and Steel Ltd
Original Assignee
Dominion Foundries and Steel 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 Dominion Foundries and Steel Ltd filed Critical Dominion Foundries and Steel Ltd
Publication of GB1425380A publication Critical patent/GB1425380A/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
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium

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)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

1425380 Chromating Zn or Cd DOMINION FOUNDRIES & STEEL Ltd 31 Aug 1973 [31 Aug 1972] 41168/73 Heading C7U Cd or Zn surfaces are chromated using an aqueous solution (pH less than 1.15) containing Cr ions (5 to 15 g./l.), F ions (0.1 to 0.30 g./l.), and perchlorate ions (0.4 to 0.85 g./l.). The apparatus described for applying the solution forms the subject-matter of Specification 1425379.
GB4116873A 1972-08-31 1973-08-31 Compositions and processes for producing chromium conversion coa tings Expired GB1425380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00285314A US3857739A (en) 1972-08-31 1972-08-31 Compositions and processes for producing chromium conversion coatings on surfaces of zinc or cadmium

Publications (1)

Publication Number Publication Date
GB1425380A true GB1425380A (en) 1976-02-18

Family

ID=23093698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4116873A Expired GB1425380A (en) 1972-08-31 1973-08-31 Compositions and processes for producing chromium conversion coa tings

Country Status (8)

Country Link
US (2) US3857739A (en)
JP (1) JPS5652118B2 (en)
BE (1) BE804288A (en)
CA (1) CA1009549A (en)
DE (1) DE2343998C2 (en)
FR (1) FR2198002B1 (en)
GB (1) GB1425380A (en)
IT (1) IT990435B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857739A (en) * 1972-08-31 1974-12-31 Dominion Foundries & Steel Compositions and processes for producing chromium conversion coatings on surfaces of zinc or cadmium
CA1083018A (en) * 1977-01-14 1980-08-05 Sydney H. Melbourne Compositions and processes for producing chromium conversion coatings on surfaces of zinc/iron alloy
US4171231A (en) * 1978-04-27 1979-10-16 R. O. Hull & Company, Inc. Coating solutions of trivalent chromium for coating zinc surfaces
US4126490A (en) * 1978-05-01 1978-11-21 Caterpillar Mitsubishi Ltd. Composition for forming chromate coating
US5219617A (en) * 1989-09-19 1993-06-15 Michigan Chrome And Chemical Company Corrosion resistant coated articles and process for making same
DE19615664A1 (en) 1996-04-19 1997-10-23 Surtec Produkte Und Systeme Fu Chromium (VI) free chromate layer and process for its production
US7314671B1 (en) 1996-04-19 2008-01-01 Surtec International Gmbh Chromium(VI)-free conversion layer and method for producing it
WO2010025442A1 (en) * 2008-08-29 2010-03-04 Mirchem Technologies Llc Trivalent chromium conversion coating
US20110070429A1 (en) * 2009-09-18 2011-03-24 Thomas H. Rochester Corrosion-resistant coating for active metals

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106227A (en) * 1935-04-29 1938-01-25 Allegheny Steel Co Surface treatment of metal to prevent localized corrosive attack
US2786002A (en) * 1954-04-28 1957-03-19 American Chem Paint Co Method of treating zinciferous surfaces
US3116176A (en) * 1959-05-14 1963-12-31 Raymond Druckknopf & Metallwar Process for the production of corrosionresistant coatings on zinc- and cadmium-surfaces
US3287179A (en) * 1963-01-04 1966-11-22 Frank Theodore Process for preparing aluminum surfaces prior to plating
US3331710A (en) * 1963-08-23 1967-07-18 Hooker Chemical Corp Method for coating aluminum
US3481797A (en) * 1966-08-17 1969-12-02 Hooker Chemical Corp Method for operating chemical processing solutions
AU412989B2 (en) * 1967-04-20 1971-05-04 John Lysaght (Australia) Limited Composition and process for inhibiting corrosion of zinc surfaces
US3620777A (en) * 1968-07-24 1971-11-16 Hooker Chemical Corp Chromate chemical coating solution for zinc alloy
US3660172A (en) * 1970-08-19 1972-05-02 Amchem Prod Prepaint treatment for zinciferous surfaces
US3706604A (en) * 1971-01-20 1972-12-19 Oxy Metal Finishing Corp Process for the coating of metal
US3752707A (en) * 1971-08-23 1973-08-14 Heatbath Corp Corrosion resistant composition and method
US3857739A (en) * 1972-08-31 1974-12-31 Dominion Foundries & Steel Compositions and processes for producing chromium conversion coatings on surfaces of zinc or cadmium

Also Published As

Publication number Publication date
BE804288A (en) 1973-12-17
DE2343998C2 (en) 1983-05-11
JPS4991933A (en) 1974-09-03
DE2343998A1 (en) 1974-03-07
FR2198002B1 (en) 1978-01-27
FR2198002A1 (en) 1974-03-29
AU5977373A (en) 1975-03-06
USRE29827E (en) 1978-11-07
JPS5652118B2 (en) 1981-12-10
IT990435B (en) 1975-06-20
US3857739A (en) 1974-12-31
CA1009549A (en) 1977-05-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee