GB715608A - 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
GB715608A
GB715608A GB2485053A GB2485053A GB715608A GB 715608 A GB715608 A GB 715608A GB 2485053 A GB2485053 A GB 2485053A GB 2485053 A GB2485053 A GB 2485053A GB 715608 A GB715608 A GB 715608A
Authority
GB
United Kingdom
Prior art keywords
solution
hydroxylamine
coating
ferrous surfaces
relating
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
GB2485053A
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 claimed from GB1978948A external-priority patent/GB714321A/en
Priority claimed from US106103A external-priority patent/US2657156A/en
Priority claimed from US344904A external-priority patent/US2702768A/en
Publication of GB715608A publication Critical patent/GB715608A/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 oganic base, at pH of 4.2-5.8 the solution also containing hydroxylamine or a hydroxylamine salt. Phosphates of sodium, potassium triethanolamine, guanylurea and pyridine and the hydrochloride of hydroxylamine 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 510,684, 517,049 and 519,823 are referred to.
GB2485053A 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces Expired GB715608A (en)

Priority Applications (1)

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

Applications Claiming Priority (4)

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
GB2485053A GB715608A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces
US106103A US2657156A (en) 1948-07-23 1949-07-21 Phosphate coating composition and process
US344904A US2702768A (en) 1948-07-23 1953-03-26 Ferrous surface coating process using alkali metal phosphates and hydroxylamines

Publications (1)

Publication Number Publication Date
GB715608A true GB715608A (en) 1954-09-15

Family

ID=32303571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2485053A Expired GB715608A (en) 1948-07-23 1948-07-23 Improvements in or relating to the coating of ferrous surfaces

Country Status (1)

Country Link
GB (1) GB715608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186304B (en) * 1955-08-09 1965-01-28 Metallgesellschaft Ag Process for the production of corrosion-resistant coatings on iron surfaces that form a good adhesive base

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186304B (en) * 1955-08-09 1965-01-28 Metallgesellschaft Ag Process for the production of corrosion-resistant coatings on iron surfaces that form a good adhesive base

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