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GB714321A - Improvements in or relating to the coating of ferrous surfaces - Google Patents

Improvements in or relating to the coating of ferrous surfaces

Info

Publication number
GB714321A
GB714321A GB1978948A GB1978948A GB714321A GB 714321 A GB714321 A GB 714321A GB 1978948 A GB1978948 A GB 1978948A GB 1978948 A GB1978948 A GB 1978948A GB 714321 A GB714321 A GB 714321A
Authority
GB
United Kingdom
Prior art keywords
solution
coating
ferrous surfaces
relating
exceeding
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
GB1978948A
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 GB2485053A priority Critical patent/GB715608A/en
Priority to GB1978948A priority patent/GB714321A/en
Priority to US344904A priority patent/US2702768A/en
Publication of GB714321A publication Critical patent/GB714321A/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
    • 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
    • C23C22/10—Orthophosphates containing oxidants

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

Ferrous surfaces are treated with a solution of a phosphate of an alkali metal, ammonium or an organic base, at pH of 4.2-5.8, the solution also containing a chlorate in a concentration not exceeding 4 per cent. Phosphates of sodium, potassium, triethanolamine, guanylurea and pyridine may be used. A temperature exceeding 140 DEG F. is preferably maintained. A small amount of metal accelerator, wetting agents or thickening agents may be present. After treatment, the coating may be rinsed with a solution of chromic acid, phosphoric acid, or both, or hexavalent chromium. Specifications 386,739 and 517,049 are referred to.
GB1978948A 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces Expired GB714321A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2485053A GB715608A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces
GB1978948A GB714321A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces
US344904A US2702768A (en) 1948-07-23 1953-03-26 Ferrous surface coating process using alkali metal phosphates and hydroxylamines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1978948A GB714321A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces

Publications (1)

Publication Number Publication Date
GB714321A true GB714321A (en) 1954-08-25

Family

ID=10135244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1978948A Expired GB714321A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces

Country Status (1)

Country Link
GB (1) GB714321A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875111A (en) * 1954-12-06 1959-02-24 Parker Rust Proof Co Method of forming phosphate coatings on drawn wire
DE1228121B (en) * 1960-03-10 1966-11-03 Metallgesellschaft Ag Process for facilitating the cold working of iron from steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875111A (en) * 1954-12-06 1959-02-24 Parker Rust Proof Co Method of forming phosphate coatings on drawn wire
DE1228121B (en) * 1960-03-10 1966-11-03 Metallgesellschaft Ag Process for facilitating the cold working of iron from steel

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