GB943169A - Improvements relating to the phosphate-coating of metals - Google Patents

Improvements relating to the phosphate-coating of metals

Info

Publication number
GB943169A
GB943169A GB2282/62A GB228262A GB943169A GB 943169 A GB943169 A GB 943169A GB 2282/62 A GB2282/62 A GB 2282/62A GB 228262 A GB228262 A GB 228262A GB 943169 A GB943169 A GB 943169A
Authority
GB
United Kingdom
Prior art keywords
solution
phosphate
coating
aluminium
ions
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
GB2282/62A
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 GB943169A publication Critical patent/GB943169A/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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/20—Orthophosphates containing aluminium cations

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

A microcrystalline phosphate coating, e.g. of weight between 0.8 and 1.6 g./m.2, is formed on a metal surface, e.g. of iron or zinc or an alloy thereof, by treatment with an aqueous acidic zinc phosphate solution, such as of Zn(H2PO4)2, containing from 0.02 to 1 g/l of aluminium ions as a refining agent for the coating. The aluminium ions may be introduced into the solution as aluminium hydroxide, to form Al(H2PO4)3, or a soluble aluminium salt such as the acetate, sulphate, phosphate, carbonate or fluoborate. The ratio of Al:Zn ions preferably lies between 1:7 and 1:40. Oxidizing agents may be added to the solution, e.g. H2O2, nitrates such as Zn(NO3)2 and NaNO3, chlorates, or organic nitro-derivatives. An example gives a steel plate immersed in the above solution at 80 DEG C. for 7 minutes, after a conventional degrease, and prior to water rinsing and rinsing in chromic acid solution.
GB2282/62A 1961-03-23 1962-01-22 Improvements relating to the phosphate-coating of metals Expired GB943169A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR856583A FR1293013A (en) 1961-03-23 1961-03-23 Process and solutions for coating metals using microcrystalline layers of phosphates
FR3146133X 1961-03-23

Publications (1)

Publication Number Publication Date
GB943169A true GB943169A (en) 1963-12-04

Family

ID=61187849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2282/62A Expired GB943169A (en) 1961-03-23 1962-01-22 Improvements relating to the phosphate-coating of metals

Country Status (7)

Country Link
US (1) US3146133A (en)
BE (1) BE612937A (en)
CH (1) CH398249A (en)
DE (1) DE1287890B (en)
ES (1) ES274253A1 (en)
FR (1) FR1293013A (en)
GB (1) GB943169A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109110A1 (en) * 1982-11-02 1984-05-23 Metallgesellschaft Ag Process for preparing metallic surfaces for electropainting
US4881975A (en) * 1986-12-23 1989-11-21 Albright & Wilson Limited Products for treating surfaces

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346426A (en) * 1964-04-22 1967-10-10 Detrex Chem Ind Wipe-on phosphating composition
US3676309A (en) * 1970-02-04 1972-07-11 Olin Mathieson Aluminum welding wire electrode with an alumina coating containing phosphate
JPS536945B2 (en) * 1973-02-27 1978-03-13
US4498935A (en) * 1981-07-13 1985-02-12 Parker Chemical Company Zinc phosphate conversion coating composition

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2375468A (en) * 1938-02-04 1945-05-08 Parker Rust Proof Co Phosphate coating of metals
US2316810A (en) * 1940-04-10 1943-04-20 American Chemical Paiant Compa Method of and material for coating metal surfaces with water insoluble metallic phosphates
US2554139A (en) * 1947-04-25 1951-05-22 Walterisation Company Ltd Production of phosphate coatings on metal surfaces
US2540314A (en) * 1947-07-24 1951-02-06 Parker Rust Proof Co Process and compositions for applying phosphate coatings
DE970846C (en) * 1951-06-28 1958-11-06 Metallgesellschaft Ag Process to prevent sludge formation in phosphating baths with non-layer-forming metal ions
NL91161C (en) * 1952-08-28

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109110A1 (en) * 1982-11-02 1984-05-23 Metallgesellschaft Ag Process for preparing metallic surfaces for electropainting
US4881975A (en) * 1986-12-23 1989-11-21 Albright & Wilson Limited Products for treating surfaces
US5061315A (en) * 1986-12-23 1991-10-29 Albright & Wilson Limited Products for treating surfaces
US5061314A (en) * 1986-12-23 1991-10-29 Albright & Wilson Limited Products for treating surfaces

Also Published As

Publication number Publication date
CH398249A (en) 1965-08-31
DE1287890B (en) 1900-01-01
US3146133A (en) 1964-08-25
ES274253A1 (en) 1962-06-01
BE612937A (en) 1962-05-16
FR1293013A (en) 1962-05-11

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