GB858960A - Improvements in or relating to phosphate coating processes - Google Patents

Improvements in or relating to phosphate coating processes

Info

Publication number
GB858960A
GB858960A GB2988958A GB2988958A GB858960A GB 858960 A GB858960 A GB 858960A GB 2988958 A GB2988958 A GB 2988958A GB 2988958 A GB2988958 A GB 2988958A GB 858960 A GB858960 A GB 858960A
Authority
GB
United Kingdom
Prior art keywords
zinc
phosphate coating
relating
carbonate
coating processes
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
GB2988958A
Inventor
Richard Elliott Shaw
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 GB2988958A priority Critical patent/GB858960A/en
Publication of GB858960A publication Critical patent/GB858960A/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

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)
  • Rotary Pumps (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

In a process of coating metal surfaces with a phosphate layer containing zinc, an aqueous paste containing 20/50% by weight of zinc oxide or zinc carbonate is metered into the phosphate coating solution. The paste may also include other water-insoluble additives such as barium carbonate, calcium carbonate, gums, starch and cellulose ethers, and may be metered directly into phosphating baths or into circulating solutions in spray processes using conventional apparatus such as a gear pump, reciprocating pump or a stirred pressure pot.
GB2988958A 1958-09-18 1958-09-18 Improvements in or relating to phosphate coating processes Expired GB858960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2988958A GB858960A (en) 1958-09-18 1958-09-18 Improvements in or relating to phosphate coating processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2988958A GB858960A (en) 1958-09-18 1958-09-18 Improvements in or relating to phosphate coating processes

Publications (1)

Publication Number Publication Date
GB858960A true GB858960A (en) 1961-01-18

Family

ID=10298823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2988958A Expired GB858960A (en) 1958-09-18 1958-09-18 Improvements in or relating to phosphate coating processes

Country Status (1)

Country Link
GB (1) GB858960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751239A1 (en) * 1995-06-30 1997-01-02 Metallgesellschaft Aktiengesellschaft Process for rejuvenating phosphating solutions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751239A1 (en) * 1995-06-30 1997-01-02 Metallgesellschaft Aktiengesellschaft Process for rejuvenating phosphating solutions

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