GB876250A - Phosphate coating - Google Patents

Phosphate coating

Info

Publication number
GB876250A
GB876250A GB767459A GB767459A GB876250A GB 876250 A GB876250 A GB 876250A GB 767459 A GB767459 A GB 767459A GB 767459 A GB767459 A GB 767459A GB 876250 A GB876250 A GB 876250A
Authority
GB
United Kingdom
Prior art keywords
glycerophosphate
nitrite
phosphate coating
added
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
GB767459A
Inventor
Edward Roitt
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 GB767459A priority Critical patent/GB876250A/en
Publication of GB876250A publication Critical patent/GB876250A/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
    • C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions
    • 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
    • C23C22/22—Orthophosphates containing alkaline earth metal cations

Abstract

Glycerophosphate is added to zinc phosphate solutions used for applying phosphate coatings to ferriferous surfaces. The glycerophosphate may be added direct to the working solutions or may be incorporated in concentrates used for make-up or replenishment purposes. Its concentration in the solution expressed as sodium glycerophosphate, is preferably 0.1-0.5% by weight. The solution may also contain calcium and an accelerator such as nitrite, nitrite/nitrate or chlorate.
GB767459A 1959-03-05 1959-03-05 Phosphate coating Expired GB876250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB767459A GB876250A (en) 1959-03-05 1959-03-05 Phosphate coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB767459A GB876250A (en) 1959-03-05 1959-03-05 Phosphate coating

Publications (1)

Publication Number Publication Date
GB876250A true GB876250A (en) 1961-08-30

Family

ID=9837618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB767459A Expired GB876250A (en) 1959-03-05 1959-03-05 Phosphate coating

Country Status (1)

Country Link
GB (1) GB876250A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084593A1 (en) * 1982-01-25 1983-08-03 Pennwalt Corporation Phosphate conversion coatings for metals with reduced weights and crystal sizes
US6551417B1 (en) 2000-09-20 2003-04-22 Ge Betz, Inc. Tri-cation zinc phosphate conversion coating and process of making the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084593A1 (en) * 1982-01-25 1983-08-03 Pennwalt Corporation Phosphate conversion coatings for metals with reduced weights and crystal sizes
US4427459A (en) 1982-01-25 1984-01-24 Pennwalt Corporation Phosphate conversion coatings for metals with reduced coating weights and crystal sizes
US6551417B1 (en) 2000-09-20 2003-04-22 Ge Betz, Inc. Tri-cation zinc phosphate conversion coating and process of making the same

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