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GB1090743A - Anodic phosphating - Google Patents

Anodic phosphating

Info

Publication number
GB1090743A
GB1090743A GB568365A GB568365A GB1090743A GB 1090743 A GB1090743 A GB 1090743A GB 568365 A GB568365 A GB 568365A GB 568365 A GB568365 A GB 568365A GB 1090743 A GB1090743 A GB 1090743A
Authority
GB
United Kingdom
Prior art keywords
phosphating
anodic
stabilized voltage
electrolyte
metal
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
GB568365A
Inventor
Kummattithidal San Rajagopalan
Balasubramania Dandapani
Ananthakrishan Jayaraman
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.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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 Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Priority to GB568365A priority Critical patent/GB1090743A/en
Publication of GB1090743A publication Critical patent/GB1090743A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/36—Phosphatising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Phosphate coatings are formed on metal surfaces e.g. iron and steel, by applying a stabilized voltage to the surface as anode, using an electrolyte containing phosphate ions e.g. Na2HPO4 and H3PO4. The stabilized voltage is controlled by a potentiostat to produce phosphate coatings in the range up to 6000 mg/sq. ft. The coating may be modified by adding small amounts of heavy metal salts to the electrolyte or by changing the potential drop at the metal-solution interface.
GB568365A 1965-02-10 1965-02-10 Anodic phosphating Expired GB1090743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB568365A GB1090743A (en) 1965-02-10 1965-02-10 Anodic phosphating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB568365A GB1090743A (en) 1965-02-10 1965-02-10 Anodic phosphating

Publications (1)

Publication Number Publication Date
GB1090743A true GB1090743A (en) 1967-11-15

Family

ID=9800686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB568365A Expired GB1090743A (en) 1965-02-10 1965-02-10 Anodic phosphating

Country Status (1)

Country Link
GB (1) GB1090743A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006046A1 (en) * 1978-05-19 1979-12-12 Chaffoteaux & Maury Use of a solution for forming protective layers on zinc surfaces by electrolysis
EP0092342A3 (en) * 1982-04-17 1986-08-20 Nippon Steel Corporation Method for producing a steel strip having an excellent phosphate-coating property
EP0564301A1 (en) * 1992-04-03 1993-10-06 Nippon Paint Co., Ltd. Method for forming a chemical conversion film
US20160298258A1 (en) * 2013-10-24 2016-10-13 General Electric Company Metal laminate structures with systems and methods for treating

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006046A1 (en) * 1978-05-19 1979-12-12 Chaffoteaux & Maury Use of a solution for forming protective layers on zinc surfaces by electrolysis
FR2426097A1 (en) * 1978-05-19 1979-12-14 Chaffoteaux Et Maury METHOD AND COMPOSITION FOR THE FORMATION OF PROTECTIVE COATINGS ON ZINC SURFACES, AND OBJECTS THUS PROTECTED
EP0092342A3 (en) * 1982-04-17 1986-08-20 Nippon Steel Corporation Method for producing a steel strip having an excellent phosphate-coating property
EP0564301A1 (en) * 1992-04-03 1993-10-06 Nippon Paint Co., Ltd. Method for forming a chemical conversion film
US5348640A (en) * 1992-04-03 1994-09-20 Nippon Paint Co., Ltd. Chemical conversion method and aqueous chemical conversion solution used therefor
US20160298258A1 (en) * 2013-10-24 2016-10-13 General Electric Company Metal laminate structures with systems and methods for treating
US10407796B2 (en) * 2013-10-24 2019-09-10 General Electric Company Metal laminate structures with systems and methods for treating

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