GB869395A - Improvements relating to the production of chemical coatings on zinc and zinc alloys - Google Patents

Improvements relating to the production of chemical coatings on zinc and zinc alloys

Info

Publication number
GB869395A
GB869395A GB18091/59A GB1809159A GB869395A GB 869395 A GB869395 A GB 869395A GB 18091/59 A GB18091/59 A GB 18091/59A GB 1809159 A GB1809159 A GB 1809159A GB 869395 A GB869395 A GB 869395A
Authority
GB
United Kingdom
Prior art keywords
zinc
cro3
calculated
production
improvements relating
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
GB18091/59A
Inventor
Ann Maureen Triggle
Herbert Arthur Henry Jenkins
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
Priority to GB18091/59A priority Critical patent/GB869395A/en
Priority to GB4597/60A priority patent/GB899599A/en
Priority to BE591099A priority patent/BE591099A/en
Priority to DEM45412A priority patent/DE1152591B/en
Priority to CH603260A priority patent/CH396565A/en
Priority to US31640A priority patent/US3090710A/en
Priority to DEM47870A priority patent/DE1152869B/en
Publication of GB869395A publication Critical patent/GB869395A/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
    • C23C22/24—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

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)
  • Chemically Coating (AREA)
  • Coating With Molten Metal (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

An acid solution for coating Zn and Zn-base alloys is prepared by dissolving in water CrO3 and Cr2(SO4)3.6-7H2O so that the total content of hexavalent chromium (calculated as CrO3) and trivalent chromium (calculated as anhydrous Cr2(SO4)3) is 2-30 g/l, the ratio of hexavalent to trivalent chromium, calculated in the same way, is 0.2-7.0 by weight, and the pH is 1.8-2.8. The solution is preferably made up by diluting an aqueous concentrate, and may be replenished by the addition of CrO3 + Cr2(SO4)3 together with H2SO4 if the pH needs adjusting. Coatings may be formed on Zn foil, Zn-base die castings, and hot-dip and electrolytically galvanized iron and steel.
GB18091/59A 1959-05-27 1959-05-27 Improvements relating to the production of chemical coatings on zinc and zinc alloys Expired GB869395A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB18091/59A GB869395A (en) 1959-05-27 1959-05-27 Improvements relating to the production of chemical coatings on zinc and zinc alloys
GB4597/60A GB899599A (en) 1959-05-27 1960-02-09 Improvements relating to the production of chemical coatings on zine and zinc alloysand solutions therefor
BE591099A BE591099A (en) 1959-05-27 1960-05-23 Process and solutions for the production of chemical coatings on zinc and its alloys
DEM45412A DE1152591B (en) 1959-05-27 1960-05-24 Process for the production of coatings on zinc and zinc alloys and concentrate for the implementation of the process
CH603260A CH396565A (en) 1959-05-27 1960-05-25 Method and solutions for chemical coating of zinc and its alloys
US31640A US3090710A (en) 1959-05-27 1960-05-25 Method and solution for producing chromate coatings on zinc and zinc alloys
DEM47870A DE1152869B (en) 1959-05-27 1961-02-01 Process for the production of coatings on zinc and zinc alloys

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB18091/59A GB869395A (en) 1959-05-27 1959-05-27 Improvements relating to the production of chemical coatings on zinc and zinc alloys
GB4597/60A GB899599A (en) 1959-05-27 1960-02-09 Improvements relating to the production of chemical coatings on zine and zinc alloysand solutions therefor

Publications (1)

Publication Number Publication Date
GB869395A true GB869395A (en) 1961-05-31

Family

ID=61187017

Family Applications (2)

Application Number Title Priority Date Filing Date
GB18091/59A Expired GB869395A (en) 1959-05-27 1959-05-27 Improvements relating to the production of chemical coatings on zinc and zinc alloys
GB4597/60A Expired GB899599A (en) 1959-05-27 1960-02-09 Improvements relating to the production of chemical coatings on zine and zinc alloysand solutions therefor

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4597/60A Expired GB899599A (en) 1959-05-27 1960-02-09 Improvements relating to the production of chemical coatings on zine and zinc alloysand solutions therefor

Country Status (5)

Country Link
US (1) US3090710A (en)
BE (1) BE591099A (en)
CH (1) CH396565A (en)
DE (2) DE1152591B (en)
GB (2) GB869395A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL129365C (en) * 1962-11-10
CA1228000A (en) * 1981-04-16 1987-10-13 David E. Crotty Chromium appearance passivate solution and process
JPS6020467B2 (en) * 1982-01-11 1985-05-22 荏原ユ−ジライト株式会社 Colored chromate treatment method for zinc-nickel alloy plated products
GB2215740B (en) * 1988-02-08 1992-06-03 Brent Chemicals Int Composition and process for treating metal surfaces
GB8802788D0 (en) * 1988-02-08 1988-03-09 Brent Chemicals Int Composition & process for treating metal surfaces
US5022938A (en) * 1989-07-31 1991-06-11 Omi International Corporation Method for preparing corrosion-resistant zinc-cobalt surfaces
DE4135524C2 (en) * 1991-10-28 1995-01-26 Gc Galvano Consult Gmbh Method and means for chromating surfaces made of zinc or cadmium or alloys thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2021592A (en) * 1932-08-04 1935-11-19 Udylite Process Company Method of brightening metals electronegative to iron
US2035380A (en) * 1933-05-13 1936-03-24 New Jersey Zinc Co Method of coating zinc or cadmium base metals
US2138794A (en) * 1937-03-15 1938-11-29 Dow Chemical Co Treatment of magnesium and its alloys
BE432902A (en) * 1939-02-02
GB589887A (en) * 1945-03-08 1947-07-02 Taylor Frank Improvements in or relating to the protective surface treatment of articles made of or coated with zinc, zinc alloys, cadmium or cadmium alloys
DE924725C (en) * 1951-06-23 1955-03-07 Deinert & Co Spezialbetr E Fue Process for passivating zinc surfaces
US2902394A (en) * 1956-07-19 1959-09-01 Poor & Co Protective metal coating compositions and method of coating

Also Published As

Publication number Publication date
DE1152869B (en) 1963-08-14
DE1152591B (en) 1963-08-08
BE591099A (en) 1960-09-16
US3090710A (en) 1963-05-21
CH396565A (en) 1965-07-31
GB899599A (en) 1962-06-27

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