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 alloysInfo
- 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
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.
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)
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 |
-
1929
- 1929-06-06 GB GB1736229A patent/GB329190A/en not_active Expired
Cited By (4)
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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