GB1258021A - - Google Patents

Info

Publication number
GB1258021A
GB1258021A GB1258021DA GB1258021A GB 1258021 A GB1258021 A GB 1258021A GB 1258021D A GB1258021D A GB 1258021DA GB 1258021 A GB1258021 A GB 1258021A
Authority
GB
United Kingdom
Prior art keywords
acid
lead
chromium
cro
jan
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
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 filed Critical
Publication of GB1258021A publication Critical patent/GB1258021A/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
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/04—Electrolytic coating other than with metals with inorganic materials
    • C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
    • C25D9/10—Electrolytic coating other than with metals with inorganic materials by cathodic processes on iron or steel
    • 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
    • C25D11/38—Chromatising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

1,258,021. Electro-depositing Cr and hydrated Cr oxide. NIPPON KOKAN K. K. Jan. 2, 1970 [Jan. 13, 1969], No. 181/70. Heading C7B. A duplex layer of metallic chromium and hydrated chromium oxide is deposited on the surface of a steel plate by immersing the plate as a cathode in a chromium-containing electrolyte comprising chromic acid ions, one or more of thiocyanic acid, thiosulphuric acid, dithionous acid, sulphurous acid, thiosulphurous acid, pyrosulphurous acid, a salt of any of these acids or a sulphide as a first promoting agent, and one or more of hydrofluoric acid, hydrosilicofluoric acid, borofluoric acid or a salt of one of these acids as a second promoting agent. Preferably the concentration of chromic acid, expressed as CrO 3 , is 10-100 grams/litre and the concentrations of the two promoting agents are each from 1/500 to 1/25 of the weight of CrO 3 . The anode used may be of lead, lead-tin alloy or lead-antimony alloy, the temperature of the electrolyte 40-60‹ C. and the current density 10-45 amps/sq. dm.
GB1258021D 1969-01-13 1970-01-02 Expired GB1258021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP206669 1969-01-13

Publications (1)

Publication Number Publication Date
GB1258021A true GB1258021A (en) 1971-12-22

Family

ID=11518954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1258021D Expired GB1258021A (en) 1969-01-13 1970-01-02

Country Status (4)

Country Link
US (1) US3679554A (en)
DE (1) DE2001274C3 (en)
FR (1) FR2028235B1 (en)
GB (1) GB1258021A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062737A (en) * 1974-12-11 1977-12-13 International Business Machines Corporation Electrodeposition of chromium
US4141803A (en) * 1975-12-03 1979-02-27 International Business Machines Corporation Method and composition for electroplating chromium and its alloys and the method of manufacture of the composition
US4161432A (en) * 1975-12-03 1979-07-17 International Business Machines Corporation Electroplating chromium and its alloys
GB2209177A (en) * 1987-08-27 1989-05-04 Nippon Sheet Glass Co Ltd Method for production of oxide film by treating substrates with supersaturated metal oxide solution
GB2186887B (en) * 1985-11-25 1990-08-22 Toyo Kohan Co Ltd Surface treated steel sheet for welded can material and method for its production

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425894B2 (en) * 1975-02-04 1979-08-31
JPS55131198A (en) * 1979-03-30 1980-10-11 Toyo Kohan Co Ltd Electrolytic chromic acid treating steel sheet for adhesion can
FR2465011A1 (en) * 1979-09-06 1981-03-20 Carnaud Sa MATERIAL CONSISTING OF A PROTECTED STEEL SHEET, METHOD FOR MANUFACTURING SAME, AND APPLICATIONS THEREOF, IN PARTICULAR TO PRESERVE BOXES
JPS5729597A (en) 1980-07-28 1982-02-17 Teksid Spa Long life thin plate for automobile body and method
JPS6024399A (en) * 1983-07-20 1985-02-07 Kawasaki Steel Corp Production of tin-free steel plate having excellent adhesion to paint
CN104919091A (en) * 2012-11-21 2015-09-16 塔塔钢铁艾默伊登有限责任公司 Chromium-chromium oxide coatings applied to steel substrates for packaging applications and a method for producing said coatings

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296100A (en) * 1962-05-09 1967-01-03 Yawata Iron & Steel Co Process for producing anticorrosive surface treated steel sheets and product thereof
FR1382237A (en) * 1963-10-30 1964-12-18 Toyo Kohan Co Ltd Improvements to the processes for forming a protective coating on the surface of metals, to the electrolytes used for this purpose, and to the processes for the preparation of such electrolytes
GB1099836A (en) * 1965-07-12 1968-01-17 Toyo Kohan Co Ltd Process for treating electrolytically chromated metal surfaces
FR1543364A (en) * 1967-09-07 1968-10-25 Nippon Kokan Kk Anti-corrosive treatment of surfaces of iron and steel materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062737A (en) * 1974-12-11 1977-12-13 International Business Machines Corporation Electrodeposition of chromium
USRE31508E (en) 1974-12-11 1984-01-24 International Business Machines Corporation Electrodeposition of chromium
US4141803A (en) * 1975-12-03 1979-02-27 International Business Machines Corporation Method and composition for electroplating chromium and its alloys and the method of manufacture of the composition
US4161432A (en) * 1975-12-03 1979-07-17 International Business Machines Corporation Electroplating chromium and its alloys
GB2186887B (en) * 1985-11-25 1990-08-22 Toyo Kohan Co Ltd Surface treated steel sheet for welded can material and method for its production
GB2209177A (en) * 1987-08-27 1989-05-04 Nippon Sheet Glass Co Ltd Method for production of oxide film by treating substrates with supersaturated metal oxide solution
US4882183A (en) * 1987-08-27 1989-11-21 Nippon Sheet Glass Co., Ltd. Method for production of oxide film
GB2209177B (en) * 1987-08-27 1992-01-15 Nippon Sheet Glass Co Ltd Method for production of oxide film

Also Published As

Publication number Publication date
DE2001274C3 (en) 1981-06-04
DE2001274A1 (en) 1970-07-30
FR2028235A1 (en) 1970-10-09
DE2001274B2 (en) 1980-10-16
US3679554A (en) 1972-07-25
FR2028235B1 (en) 1973-04-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years