GB329190A - Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys - Google Patents

Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys

Info

Publication number
GB329190A
GB329190A GB1736229A GB1736229A GB329190A GB 329190 A GB329190 A GB 329190A GB 1736229 A GB1736229 A GB 1736229A GB 1736229 A GB1736229 A GB 1736229A GB 329190 A GB329190 A GB 329190A
Authority
GB
United Kingdom
Prior art keywords
articles
aluminium
acid
alloys
coil
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
GB1736229A
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.)
ERNST WOLFGANG KUTTNER
Original Assignee
ERNST WOLFGANG KUTTNER
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 ERNST WOLFGANG KUTTNER filed Critical ERNST WOLFGANG KUTTNER
Priority to GB1736229A priority Critical patent/GB329190A/en
Publication of GB329190A publication Critical patent/GB329190A/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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Insulated Conductors (AREA)

Abstract

329,190. K³ttner, E. W. June 6, 1929. Insulating coverings for cables.-An insulating layer of aluminium oxide is produced on the surface of articles of aluminium or its alloys by electrolytic treatment in a bath containing oxalic acid and in addition either an oxidizing compound or a strong inorganic acid. Hydrogen peroxide, potassium bichromate, chromic acid, nitric acid or hydrochloric acid ma be employed as the additional agent. Potassium iodide may be present in addition to the agents specified above. The articles may be connected as anodes with a copper cathode. Alternating current may be employed, the articles constituting both electrodes. In an example, three aluminium sheets are connected to a three-phase 120 volt supply in a bath containing 35 gms. oxalic acid, and 1 gm. potassium permanganate per litre at 25‹ C. The wire or strip coated according to the invention may be wound into a coil without further insulation and may be. heated to a red heat, the insulation being improved thereby; the coil may, however, be coated with lacquer or enamel which is hardened by the heating operation.
GB1736229A 1929-06-06 1929-06-06 Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys Expired GB329190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1736229A GB329190A (en) 1929-06-06 1929-06-06 Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1736229A GB329190A (en) 1929-06-06 1929-06-06 Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys

Publications (1)

Publication Number Publication Date
GB329190A true GB329190A (en) 1930-05-15

Family

ID=10093857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1736229A Expired GB329190A (en) 1929-06-06 1929-06-06 Improvement in the method of electrolytically producing insulating layers on articles of aluminium and its alloys

Country Status (1)

Country Link
GB (1) GB329190A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963409A (en) * 1957-10-07 1960-12-06 Reynolds Metals Co Flexible anodic coating
US4276129A (en) * 1980-06-25 1981-06-30 Matsushita Electric Industrial Co., Ltd. Method for producing foil electrodes for electrolytic capacitor
USRE32512E (en) * 1980-06-25 1987-09-29 Matsushita Electric Industrial Co., Ltd. Method for producing foil electrodes for electrolytic capacitor
US10941501B2 (en) * 2013-03-29 2021-03-09 Analytical Specialties, Inc. Method and composition for metal finishing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963409A (en) * 1957-10-07 1960-12-06 Reynolds Metals Co Flexible anodic coating
US4276129A (en) * 1980-06-25 1981-06-30 Matsushita Electric Industrial Co., Ltd. Method for producing foil electrodes for electrolytic capacitor
USRE32512E (en) * 1980-06-25 1987-09-29 Matsushita Electric Industrial Co., Ltd. Method for producing foil electrodes for electrolytic capacitor
US10941501B2 (en) * 2013-03-29 2021-03-09 Analytical Specialties, Inc. Method and composition for metal finishing

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