GB1245820A - Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation - Google Patents

Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation

Info

Publication number
GB1245820A
GB1245820A GB5739168A GB5739168A GB1245820A GB 1245820 A GB1245820 A GB 1245820A GB 5739168 A GB5739168 A GB 5739168A GB 5739168 A GB5739168 A GB 5739168A GB 1245820 A GB1245820 A GB 1245820A
Authority
GB
United Kingdom
Prior art keywords
aluminium
insulating film
electrically insulating
base alloys
anodic oxidation
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
GB5739168A
Inventor
Takashi Suzuki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to GB5739168A priority Critical patent/GB1245820A/en
Publication of GB1245820A publication Critical patent/GB1245820A/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
    • C25D11/026—Anodisation with spark discharge
    • 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)
  • Photoreceptors In Electrophotography (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)

Abstract

1,245,820. Anodizing Al and Al base alloys. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Dec. 3, 1968, No. 57391/68. Heading C7B. Al or an Al base alloy is anodically oxidized to form an electrically insulating film thereon using a voltage such that spark discharge occurs at the anode, while intensely agitating the electrolyte, the ratio of the surface area of the cathode to the surface area of the anode being at least 10:1. The voltage may be between that at which spark discharge begins and 50 volts thereabove. The electrolyte may be sulphuric, chromic, oxalic or phosphoric acid. The Al may be in the form of a wire or strand.
GB5739168A 1968-12-03 1968-12-03 Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation Expired GB1245820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5739168A GB1245820A (en) 1968-12-03 1968-12-03 Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5739168A GB1245820A (en) 1968-12-03 1968-12-03 Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation

Publications (1)

Publication Number Publication Date
GB1245820A true GB1245820A (en) 1971-09-08

Family

ID=10479060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5739168A Expired GB1245820A (en) 1968-12-03 1968-12-03 Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation

Country Status (1)

Country Link
GB (1) GB1245820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038603A1 (en) * 1995-06-02 1996-12-05 Gennady Georgievich Nechaev Method of using a micro-arc to apply a coating to the surface of an article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038603A1 (en) * 1995-06-02 1996-12-05 Gennady Georgievich Nechaev Method of using a micro-arc to apply a coating to the surface of an article

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