GB783749A - Improvements in or relating to the production of phosphate coatings on metals - Google Patents

Improvements in or relating to the production of phosphate coatings on metals

Info

Publication number
GB783749A
GB783749A GB10956A GB10956A GB783749A GB 783749 A GB783749 A GB 783749A GB 10956 A GB10956 A GB 10956A GB 10956 A GB10956 A GB 10956A GB 783749 A GB783749 A GB 783749A
Authority
GB
United Kingdom
Prior art keywords
ion
clo3
chlorate
phosphate
solution
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
GB10956A
Inventor
Alfred Douty
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
Priority to GB10956A priority Critical patent/GB783749A/en
Publication of GB783749A publication Critical patent/GB783749A/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
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/14—Orthophosphates containing zinc cations containing also chlorate anions

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 acid solution of a coating metal phosphate containing a chlorate accelerator, which is used to produce coatings on a series of metal surfaces, is continuously or intermittently replenished with a composition in which, on a molar basis, the quantity of ClO3 ion present relative to P2O5 ion is half the quantity of ClO3 ion relative to P2O5 ion present in the starting solution. Preferably the P2O5:ClO3 ratio of the starting solution is between 1:0.4 and 1:0.6 and the P2O5:CiO3 ratio of the replenishing composition is between 1:0.2 and 1:0.3. The metal coated may be iron or steel, the phosphate is preferably zinc phosphate the chlorate may be sodium chlorate, and the solution may also contain nitrates, nitrites and heavy metal salts. Specification 672,367 is referred to.
GB10956A 1956-01-02 1956-01-02 Improvements in or relating to the production of phosphate coatings on metals Expired GB783749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10956A GB783749A (en) 1956-01-02 1956-01-02 Improvements in or relating to the production of phosphate coatings on metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10956A GB783749A (en) 1956-01-02 1956-01-02 Improvements in or relating to the production of phosphate coatings on metals

Publications (1)

Publication Number Publication Date
GB783749A true GB783749A (en) 1957-09-25

Family

ID=9698574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10956A Expired GB783749A (en) 1956-01-02 1956-01-02 Improvements in or relating to the production of phosphate coatings on metals

Country Status (1)

Country Link
GB (1) GB783749A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178276B (en) * 1959-09-23 1964-09-17 Metallgesellschaft Ag Process for phosphating iron and steel with the help of acidic zinc phosphate solutions containing chlorate
DE1204914B (en) * 1961-03-16 1965-11-11 Metallgesellschaft Ag Process for the addition of chlorate and / or bromate containing zinc phosphate solutions for the phosphating of iron and steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178276B (en) * 1959-09-23 1964-09-17 Metallgesellschaft Ag Process for phosphating iron and steel with the help of acidic zinc phosphate solutions containing chlorate
DE1204914B (en) * 1961-03-16 1965-11-11 Metallgesellschaft Ag Process for the addition of chlorate and / or bromate containing zinc phosphate solutions for the phosphating of iron and steel

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