GB1331365A - Colouring an anodic oxide coating on aluminium and its alloys - Google Patents

Colouring an anodic oxide coating on aluminium and its alloys

Info

Publication number
GB1331365A
GB1331365A GB2446971*A GB2446971A GB1331365A GB 1331365 A GB1331365 A GB 1331365A GB 2446971 A GB2446971 A GB 2446971A GB 1331365 A GB1331365 A GB 1331365A
Authority
GB
United Kingdom
Prior art keywords
colouring
alloys
chromic
aluminium
nickel
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
GB2446971*A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1331365A publication Critical patent/GB1331365A/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
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C25D11/22—Electrolytic after-treatment for colouring layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

1331365 Colouring anodized aluminium and alloys thereof SUMITOMO CHEMICAL CO Ltd 19 April 1971 [18 March 1970] 24469/71 Heading C7B A method for colouring anodic oxide films on articles of aluminium or alloys thereof comprises direct current electrolysis using such an article as the cathode in a bath of electrolyte which is an aqueous solution of at least one acid or salt containing at least one metal ion of, for example, Ag, As, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Se, Sn, Ti, V or Zn. Suitable electrolytes comprise at least one of boric, chromic and selenic acids; cadmium, cobalt, lead, nickel and zinc acetates; ammonium, nickel and stannouschlorides; chromic and silver nitrates; and chromic, cobalt, cupric, ferrous, magnesium, manganese and nickel sulphates. The article which may be a sheet, plate, extrusion or casting is pretreated with NaOH, anodized using an electrolyte comprising H 2 SO 4 to which naphthalenedisulphonic acid may be added, and after the colouring process is sealed conventionally. The oxide film is not changed in thickness during the colouring process and may be toughened. Its eventual colour depends upon the electrolyte used and the conditions of electrolysis and may for example be black, brown, green, yellow or white.
GB2446971*A 1970-03-18 1971-04-19 Colouring an anodic oxide coating on aluminium and its alloys Expired GB1331365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45023275A JPS4948824B1 (en) 1970-03-18 1970-03-18

Publications (1)

Publication Number Publication Date
GB1331365A true GB1331365A (en) 1973-09-26

Family

ID=12106038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2446971*A Expired GB1331365A (en) 1970-03-18 1971-04-19 Colouring an anodic oxide coating on aluminium and its alloys

Country Status (6)

Country Link
US (1) US3761362A (en)
JP (1) JPS4948824B1 (en)
CA (1) CA944311A (en)
DE (1) DE2112927C3 (en)
FR (1) FR2083385B1 (en)
GB (1) GB1331365A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1059059A (en) * 1972-06-06 1979-07-24 Riken Light Metal Industries Co. Producing a coloured oxide on an article of aluminium or aluminium alloy
JPS5247409B2 (en) * 1972-09-14 1977-12-02
CA1032107A (en) * 1973-03-20 1978-05-30 Tadashi Hirokane Process for electrolytic coloring of aluminum or aluminum alloy articles
JPS578196B2 (en) * 1973-10-20 1982-02-15
JPS5084431A (en) * 1973-11-29 1975-07-08
US3930966A (en) * 1974-03-20 1976-01-06 Riken Light Metal Industries Company, Ltd. Method of forming colored oxide film on aluminum or aluminum alloy
DE2732668C2 (en) * 1977-07-20 1979-08-23 Langbein-Pfanhauser Werke Ag, 4040 Neuss Aluminum sheet baking pan and process for its manufacture
JPS5852037B2 (en) * 1979-09-20 1983-11-19 株式会社 日本軽金属総合研究所 Manufacturing method of colored aluminum material
US6866945B2 (en) * 2003-01-06 2005-03-15 General Motors Corporation Magnesium containing aluminum alloys and anodizing process
CN102304743B (en) * 2011-09-16 2014-04-02 南南铝业股份有限公司 Electrochemical oxidation film sealing method for aluminum/aluminum alloy surface

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE618830C (en) * 1934-02-08 1935-09-17 Siemens & Halske Akt Ges Process for producing dark-colored, oxygen-containing layers on copper-containing aluminum alloys
DE741753C (en) * 1940-04-13 1943-11-17 Langbein Pfanhauser Werke Ag Process for the electrolytic coloring of objects made of aluminum with an oxidic surface layer
GB1022927A (en) * 1966-12-12 1966-03-16 Tahei Asada Improvements in and relating to coloring aluminium articles by electrolytic depositions of colored compounds
DE1902983C3 (en) * 1968-06-21 1978-06-22 Keller, Eberhard, 7121 Freudental Process for the electrolytic coloring of anodic oxide layers on aluminum or aluminum alloys

Also Published As

Publication number Publication date
DE2112927B2 (en) 1980-08-21
JPS4948824B1 (en) 1974-12-24
US3761362A (en) 1973-09-25
FR2083385A1 (en) 1971-12-17
FR2083385B1 (en) 1973-10-19
DE2112927A1 (en) 1971-09-30
CA944311A (en) 1974-03-26
DE2112927C3 (en) 1981-05-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee