GB409679A - Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles - Google Patents

Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles

Info

Publication number
GB409679A
GB409679A GB24333/32A GB2433332A GB409679A GB 409679 A GB409679 A GB 409679A GB 24333/32 A GB24333/32 A GB 24333/32A GB 2433332 A GB2433332 A GB 2433332A GB 409679 A GB409679 A GB 409679A
Authority
GB
United Kingdom
Prior art keywords
acid
per cent
treatment
sulphuric acid
aluminium
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
GB24333/32A
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.)
ALUMINUM COLORS Inc
Original Assignee
ALUMINUM COLORS Inc
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 ALUMINUM COLORS Inc filed Critical ALUMINUM COLORS Inc
Publication of GB409679A publication Critical patent/GB409679A/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
    • 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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • 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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids

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)
  • Printing Plates And Materials Therefor (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

409,679. Electrolytic surface treatment of aluminium and its alloys. ALUMINUM COLORS, Inc., 537, East Washington Street, Indianapolis, Indiana, U.S.A.-(Assignees of Work, H. K. ; Oakmont, Pennsylvania, U.S.A.) Aug. 31, 1932, No. 24333. Convention date, Jan. 26. [Class 41.] Oxide coatings are produced by subjecting the metals to anodic treatment in a bath containing sulphuric acid and an organic acid or to a two-stage treatment with separate electrolytes of sulphuric acid and organic acid. Direct or alternating current may be employed Di-basic organic acids such as oxalic, malic, malonic, maleic and succinic acids are preferably employed. In an example the metal is first treated in a bath containing 2-70 per cent of sulphuric acid, with a voltage 35-40, at a temperature below 40‹ C. It is then treated in a bath containing 2-9 per cent of oxalic acid, with a voltage 30-80, at a temperature below 45‹ C. A bath for single-stage treatment may contain 0.5-15 per cent of sulphuric acid and from 0.5 per cent up to the saturation limit of oxalic acid. The acids may be replaced by their ammonium or alkali metal salts in acid solution.
GB24333/32A 1932-01-26 1932-08-31 Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles Expired GB409679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US589056A US1965682A (en) 1932-01-26 1932-01-26 Coating aluminum

Publications (1)

Publication Number Publication Date
GB409679A true GB409679A (en) 1934-04-30

Family

ID=24356423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24333/32A Expired GB409679A (en) 1932-01-26 1932-08-31 Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles

Country Status (4)

Country Link
US (1) US1965682A (en)
DE (2) DE629629C (en)
FR (1) FR761876A (en)
GB (1) GB409679A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252620A (en) * 1979-04-25 1981-02-24 Setsuo Tomita Process for forming an anodized film over the surface of aluminum substrates
US4455201A (en) * 1982-03-30 1984-06-19 Siemens Aktiengesellschaft Bath and method for anodizing aluminized parts

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744046C (en) * 1938-11-23 1944-01-08 Paul Kiekeber Process for the production of hard, wear-resistant coatings on aluminum and aluminum alloys
DE974298C (en) * 1942-05-23 1960-11-17 Siemens Ag Method of manufacturing an electrolytic capacitor
US2692851A (en) * 1950-04-22 1954-10-26 Aluminum Co Of America Method of forming hard, abrasionresistant coatings on aluminum and aluminum alloys
US2771650A (en) * 1952-02-04 1956-11-27 Gen Motors Corp Shell molding
US3252875A (en) * 1961-11-09 1966-05-24 Aluminum Co Of America Aluminum anodizing method
DE1276420B (en) * 1962-02-14 1968-09-29 Vaw Ver Aluminium Werke Ag Aqueous bath and process for anodic production of colored oxide layers on objects made of aluminum or aluminum alloys
FR1331558A (en) * 1962-05-25 1963-07-05 Carnaud & Forges Improvements to the anodic oxidation of aluminum processes
NL121366C (en) * 1962-06-16
US3276980A (en) * 1963-01-29 1966-10-04 Gen Motors Corp Method of anodizing aluminum
GB1106822A (en) * 1964-06-30 1968-03-20 Reynolds Metals Co Strengthening aluminum articles by anodizing
US3405042A (en) * 1965-03-04 1968-10-08 Vaw Ver Aluminium Werke Ag Aluminum anodizing process
DE1696305B1 (en) * 1965-07-21 1970-02-19 Vaw Ver Aluminium Werke Ag Process for anodizing objects made of aluminum or aluminum alloys
GB1173597A (en) * 1965-12-09 1969-12-10 Acorn Anodising Company Ltd Improvements in or relating to the Anodising of Aluminium and its Alloys.
GB1333386A (en) * 1969-10-27 1973-10-10 Albright & Wilson Protection of metallic surfaces
US5963435A (en) * 1997-03-25 1999-10-05 Gianna Sweeney Apparatus for coating metal with oxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252620A (en) * 1979-04-25 1981-02-24 Setsuo Tomita Process for forming an anodized film over the surface of aluminum substrates
US4455201A (en) * 1982-03-30 1984-06-19 Siemens Aktiengesellschaft Bath and method for anodizing aluminized parts

Also Published As

Publication number Publication date
US1965682A (en) 1934-07-10
DE616812C (en)
DE629629C (en)
FR761876A (en) 1934-03-29

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