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GB834714A - Improvements in or relating to anodising aluminium and its alloys - Google Patents

Improvements in or relating to anodising aluminium and its alloys

Info

Publication number
GB834714A
GB834714A GB2863057A GB2863057A GB834714A GB 834714 A GB834714 A GB 834714A GB 2863057 A GB2863057 A GB 2863057A GB 2863057 A GB2863057 A GB 2863057A GB 834714 A GB834714 A GB 834714A
Authority
GB
United Kingdom
Prior art keywords
aluminium
wire
frequency
cycles per
produced
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
GB2863057A
Inventor
Alfred Otto Francis Freund
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2863057A priority Critical patent/GB834714A/en
Publication of GB834714A publication Critical patent/GB834714A/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
    • C25D11/024—Anodisation under pulsed or modulated current or potential

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Drying Of Semiconductors (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

834,714. Anodizing aluminium. IMPERIAL CHEMICAL INDUSTRIES Ltd. Sept. 5, 1958 [Sept. 11, 1957], No. 28630/57. Class 41. An anodic coating is produced on aluminium or aluminium alloy wire or strip by using an alternating current of a frequency between 100 cycles per second and 300,000 cycles per second. The preferred range is 2000 to 10,000 cycles per second. The temperature of the electrolyte is preferably maintained at 50‹ to 75‹ C. A D.C. component may also be included. In an example, aluminium wire of 0.035 inch diameter was anodized in 10% v/v sulphuric acid at 55 ‹ C. with a current density of 10 amps/ sq. in. of wire surface. The frequency was 5000 c/s. and the duration of the treatment at any point on the wire was 30 seconds. The flexibility of the coating so produced is compared with that of coatings produced by D.C. and mains-frequency A.C. methods.
GB2863057A 1957-09-11 1957-09-11 Improvements in or relating to anodising aluminium and its alloys Expired GB834714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2863057A GB834714A (en) 1957-09-11 1957-09-11 Improvements in or relating to anodising aluminium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2863057A GB834714A (en) 1957-09-11 1957-09-11 Improvements in or relating to anodising aluminium and its alloys

Publications (1)

Publication Number Publication Date
GB834714A true GB834714A (en) 1960-05-11

Family

ID=10278635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2863057A Expired GB834714A (en) 1957-09-11 1957-09-11 Improvements in or relating to anodising aluminium and its alloys

Country Status (1)

Country Link
GB (1) GB834714A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237154A1 (en) * 1986-02-06 1987-09-16 Alcan International Limited Insulated aluminium wire
EP2206807A1 (en) * 2007-11-08 2010-07-14 Showa Denko K.K. Method for anodizing aluminum pipe for base of photoconductor drum, and base of photoconductor drum

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237154A1 (en) * 1986-02-06 1987-09-16 Alcan International Limited Insulated aluminium wire
EP2206807A1 (en) * 2007-11-08 2010-07-14 Showa Denko K.K. Method for anodizing aluminum pipe for base of photoconductor drum, and base of photoconductor drum
EP2206807A4 (en) * 2007-11-08 2011-08-03 Showa Denko Kk Method for anodizing aluminum pipe for base of photoconductor drum, and base of photoconductor drum

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