GB867493A - Improvements relating to the formation of phosphate coatings on metal surfaces - Google Patents

Improvements relating to the formation of phosphate coatings on metal surfaces

Info

Publication number
GB867493A
GB867493A GB4944/59A GB494459A GB867493A GB 867493 A GB867493 A GB 867493A GB 4944/59 A GB4944/59 A GB 4944/59A GB 494459 A GB494459 A GB 494459A GB 867493 A GB867493 A GB 867493A
Authority
GB
United Kingdom
Prior art keywords
coating
acid
formation
nitroguanidine
metal surfaces
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
GB4944/59A
Inventor
Dennis Brian Freeman
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
Priority to GB4944/59A priority Critical patent/GB867493A/en
Priority to DEM44134A priority patent/DE1145893B/en
Priority to FR818331A priority patent/FR1247850A/en
Publication of GB867493A publication Critical patent/GB867493A/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
    • C23C22/34—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 fluorides or complex fluorides
    • C23C22/36—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 fluorides or complex fluorides containing also phosphates
    • C23C22/362—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 fluorides or complex fluorides containing also phosphates containing also zinc cations
    • 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

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 phosphate coating is formed on a metal surface by brushing or spraying on to the surface an aqueous acidic solution of a coating phosphate containing at least 0.5% by weight of polyvinyl alcohol having a viscosity in 4% aqueous solution of at least 6 centipoises. Specified solutions for coating mild steel or zinc contain zinc oxide, phosphonic acid and nitric acid, together with sodium chlorate or nitroguanidine. The preferred solution for coating hot-dipped galvanized metal contains zinc oxide, phosphoric acid, nitric acid, nitroguanidine, nickel (as carborate or sulphate), and silicofluoride (as hydrofluosilicic acid or ammonium silicofluoride) Specification 673,638 is referred to.
GB4944/59A 1959-02-12 1959-02-12 Improvements relating to the formation of phosphate coatings on metal surfaces Expired GB867493A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4944/59A GB867493A (en) 1959-02-12 1959-02-12 Improvements relating to the formation of phosphate coatings on metal surfaces
DEM44134A DE1145893B (en) 1959-02-12 1960-01-28 Process and means for forming phosphate layers on metal surfaces
FR818331A FR1247850A (en) 1959-02-12 1960-02-12 Method and solution for the formation of phosphate coatings on metal surfaces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4944/59A GB867493A (en) 1959-02-12 1959-02-12 Improvements relating to the formation of phosphate coatings on metal surfaces
GB1145893X 1959-02-12

Publications (1)

Publication Number Publication Date
GB867493A true GB867493A (en) 1961-05-10

Family

ID=61026383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4944/59A Expired GB867493A (en) 1959-02-12 1959-02-12 Improvements relating to the formation of phosphate coatings on metal surfaces

Country Status (3)

Country Link
DE (1) DE1145893B (en)
FR (1) FR1247850A (en)
GB (1) GB867493A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE488925A (en) * 1948-05-13

Also Published As

Publication number Publication date
FR1247850A (en) 1960-12-02
DE1145893B (en) 1963-03-21

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