GB830632A - Improvements relating to the production of coatings on metallic surfaces - Google Patents

Improvements relating to the production of coatings on metallic surfaces

Info

Publication number
GB830632A
GB830632A GB3300/58A GB330058A GB830632A GB 830632 A GB830632 A GB 830632A GB 3300/58 A GB3300/58 A GB 3300/58A GB 330058 A GB330058 A GB 330058A GB 830632 A GB830632 A GB 830632A
Authority
GB
United Kingdom
Prior art keywords
fluoride
alloys
sodium
condensed
iron
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
GB3300/58A
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 GB830632A publication Critical patent/GB830632A/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
    • C23C22/38—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 containing also phosphates

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

An aqueous acidic solution for producing coatings on metallic surfaces contains hexavalent chromium, fluoride, and at least one condensed phosphate in an amount not exceeding 0.5% W/V calculated as the condensed sodium phosphate. Condensed phosphate is defined as the condensed phosphoric acids and their alkali metal and ammonium salts in which the mole ratio of cationic oxides (including water of composition), to anionic oxides is greater than 0 and less than 3. Hexavalent chromium may be introduced as chromic acid, alkali metal dichromate, ammonium dichromate or as the dichromate of zinc, calcium, cadmium or aluminium; fluoride may be introduced as hydrofluoric acid, sodium bifluoride, sodium fluoride + sulphuric acid, or as a complex fluoride of aluminium, titanium, zirconium, boron, silicon or iron, e.g. potassium titanium fluoride, potassium zirconium fluoride, fluoborate, and hydrofluosilicic acid; and specific condensed phosphates mentioned are disodium pyrophosphate, tetrasodium pyrophosphate, sodium tripolyphosphate and sodium hexametaphosphate. The solution may also contain nickel sulphate and ferrous sulphate. The acidity of the solutions is adjusted during operation by the addition of nitric acid. Metals which may be coated are aluminium and alloys thereof, iron and alloys thereof, nodular graphite iron, galvanised iron, zinc and alloys thereof, and magnesium and alloys thereof. The coatings are stated to form a good basis for paint, and for adhesives used in applying plastic sheets to metal surfaces.
GB3300/58A 1957-01-31 1958-01-31 Improvements relating to the production of coatings on metallic surfaces Expired GB830632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US637350A US2868682A (en) 1957-01-31 1957-01-31 Chromate-fluoride type coating solutions and method of treating metal surfaces therewith

Publications (1)

Publication Number Publication Date
GB830632A true GB830632A (en) 1960-03-16

Family

ID=24555550

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3300/58A Expired GB830632A (en) 1957-01-31 1958-01-31 Improvements relating to the production of coatings on metallic surfaces

Country Status (7)

Country Link
US (1) US2868682A (en)
BE (1) BE563956A (en)
CH (1) CH373616A (en)
DE (1) DE1096153B (en)
FR (1) FR1190562A (en)
GB (1) GB830632A (en)
NL (2) NL224487A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179960A (en) * 1985-09-06 1987-03-18 Parker Chemical Co Passivation of zinc and zinc-aluminium alloys

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278343A (en) * 1963-03-12 1966-10-11 Amchem Prod Conversion coating of magnesium alloy surfaces
NL125324C (en) * 1963-08-06 1900-01-01
US3717509A (en) * 1970-11-06 1973-02-20 Diamond Shamrock Corp Coated metal and method
US5451271A (en) * 1990-02-21 1995-09-19 Henkel Corporation Conversion treatment method and composition for aluminum and aluminum alloys
AU642478B2 (en) * 1990-02-21 1993-10-21 Henkel Corporation Conversion treatment method and composition for aluminum and aluminum alloys
WO1997041277A1 (en) * 1996-04-26 1997-11-06 Henkel Corporation Chromate passivating and storage stable concentrate solutions therefor
CN103194743B (en) * 2013-03-13 2014-12-24 华东理工大学 Surface treatment method of nickel metal strip for lithium-ion battery negative electrode ear
CN111100972B (en) * 2020-02-26 2021-12-31 江苏省沙钢钢铁研究院有限公司 Method for preventing carbon sleeve roller of continuous annealing furnace from nodulation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE467610A (en) * 1945-06-30
US2438877A (en) * 1945-09-06 1948-03-30 American Chem Paint Co Composition for and method of coating aluminum
US2499261A (en) * 1945-11-23 1950-02-28 Hall Lab Inc Compositions and methods for depositing amorphous metal-phosphate coatings on metal surfaces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179960A (en) * 1985-09-06 1987-03-18 Parker Chemical Co Passivation of zinc and zinc-aluminium alloys
GB2179960B (en) * 1985-09-06 1990-01-24 Parker Chemical Co Passivation process and composition for zinc and zinc-aluminium alloys

Also Published As

Publication number Publication date
NL224487A (en)
BE563956A (en)
US2868682A (en) 1959-01-13
CH373616A (en) 1963-11-30
DE1096153B (en) 1960-12-29
FR1190562A (en) 1959-10-14
NL107091C (en)

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