GB694454A - Improvements relating to the production of phosphate coatings on ferrous surfaces - Google Patents

Improvements relating to the production of phosphate coatings on ferrous surfaces

Info

Publication number
GB694454A
GB694454A GB30803/50A GB3080350A GB694454A GB 694454 A GB694454 A GB 694454A GB 30803/50 A GB30803/50 A GB 30803/50A GB 3080350 A GB3080350 A GB 3080350A GB 694454 A GB694454 A GB 694454A
Authority
GB
United Kingdom
Prior art keywords
phosphate
solution
production
improvements relating
phosphate coatings
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
GB30803/50A
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
Publication of GB694454A publication Critical patent/GB694454A/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
    • C23C22/14—Orthophosphates containing zinc cations containing also chlorate anions

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 thin phosphate coating is formed on a ferrous surface by means of an aqueous solution of zinc phosphate containing a chlorate accelerator, the temperature of the solution not exceeding 40 DEG C and the solution being such that the ratio of zinc to phosphate by weight is from 1:2.18 to 1:3.7 and the ratio of phosphate to chlorate by weight is not greater than 1.25:1. Another accelerator e.g. a nitrate may also be present. The coatings may be treated with a solution of chromic acid or a chromate. The process may be applied to iron or steel before fabrication into a finished article or prior to drawing.
GB30803/50A 1948-10-01 1950-12-18 Improvements relating to the production of phosphate coatings on ferrous surfaces Expired GB694454A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE298901X 1948-10-01
DE694454X 1948-10-01
DEP12000D DE804280C (en) 1948-10-01 1948-10-02 Process for the phosphating of metals

Publications (1)

Publication Number Publication Date
GB694454A true GB694454A (en) 1953-07-22

Family

ID=61187032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30803/50A Expired GB694454A (en) 1948-10-01 1950-12-18 Improvements relating to the production of phosphate coatings on ferrous surfaces

Country Status (3)

Country Link
CH (1) CH298901A (en)
DE (1) DE804280C (en)
GB (1) GB694454A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178276B (en) * 1959-09-23 1964-09-17 Metallgesellschaft Ag Process for phosphating iron and steel with the help of acidic zinc phosphate solutions containing chlorate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918305C (en) * 1952-05-24 1954-09-23 Ver Deutsche Metallwerke Ag Process to achieve high scale resistance of metallic objects
DE1046440B (en) * 1952-06-03 1958-12-11 Exxon Research Engineering Co Corrosion protection agents and methods for protecting ferrous surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178276B (en) * 1959-09-23 1964-09-17 Metallgesellschaft Ag Process for phosphating iron and steel with the help of acidic zinc phosphate solutions containing chlorate

Also Published As

Publication number Publication date
DE804280C (en) 1951-04-19
CH298901A (en) 1954-05-31

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