GB887924A - Improved phosphate coating process - Google Patents

Improved phosphate coating process

Info

Publication number
GB887924A
GB887924A GB3943359A GB3943359A GB887924A GB 887924 A GB887924 A GB 887924A GB 3943359 A GB3943359 A GB 3943359A GB 3943359 A GB3943359 A GB 3943359A GB 887924 A GB887924 A GB 887924A
Authority
GB
United Kingdom
Prior art keywords
phosphate coating
coating process
phosphoric acid
hydrogen peroxide
improved phosphate
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
GB3943359A
Inventor
Arthur Alfred Blake
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3943359A priority Critical patent/GB887924A/en
Publication of GB887924A publication Critical patent/GB887924A/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
    • C23C22/16—Orthophosphates containing zinc cations containing also peroxy-compounds

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

In a phosphate coating process using a zinc phosphate coating solution, the replenishing chemicals added include an alkali metal zincate solution. As described, a bath containing zinc dihydrogen phosphate, phosphoric acid, sodium hydroxide and hydrogen peroxide is used to coat steel and the bath is replenished with zinc dihydrogen phosphate, phosphoric acid, hydrogen peroxide and sodium zincate.
GB3943359A 1959-11-20 1959-11-20 Improved phosphate coating process Expired GB887924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3943359A GB887924A (en) 1959-11-20 1959-11-20 Improved phosphate coating process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3943359A GB887924A (en) 1959-11-20 1959-11-20 Improved phosphate coating process

Publications (1)

Publication Number Publication Date
GB887924A true GB887924A (en) 1962-01-24

Family

ID=10409514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3943359A Expired GB887924A (en) 1959-11-20 1959-11-20 Improved phosphate coating process

Country Status (1)

Country Link
GB (1) GB887924A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410055A1 (en) * 1977-11-29 1979-06-22 Ici Ltd PROCESS FOR COATING PHOSPHATE ON A METAL SUBSTRATE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410055A1 (en) * 1977-11-29 1979-06-22 Ici Ltd PROCESS FOR COATING PHOSPHATE ON A METAL SUBSTRATE

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