GB601636A - Method of improving the oxide layers obtained upon aluminium and its alloys by electrolytic means - Google Patents
Method of improving the oxide layers obtained upon aluminium and its alloys by electrolytic meansInfo
- Publication number
- GB601636A GB601636A GB28064/45A GB2806445A GB601636A GB 601636 A GB601636 A GB 601636A GB 28064/45 A GB28064/45 A GB 28064/45A GB 2806445 A GB2806445 A GB 2806445A GB 601636 A GB601636 A GB 601636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- alloys
- wire
- per cent
- bath
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
601,636. Electrolytic surface treatment of aluminium and its alloys. COMPAGNIE DE PRODUTTS CHTMIQUES ET ELECTROMETALLURGIQUES ALATS. FROGES, ET CAMARGUE. Oct. 24, 1945, No. 28064. Convention date, Nov. 11, 1943. [Class 41] Adherence of anodically-formed oxide layers on aluminium or its alloys, particularly wire or strip coated by continuous passage through a bath at a current density of at least one hundred amperes per square decimetre, is promoted by heating to a temperature between 100‹ and 600‹ C. for a period of some minutes up to several hours. The temperature chosen depends on the wire radius, and the duration upon both the wire radius and the total quantity being treated. Heating may be effected in air or a gas, or in a bath of oil or a salt or a mixture of salts. The articles may be further treated by dyeing, pore-filling, impregnation, &c. In an example, a wire of 99.5 per cent aluminium, 1 mm. in diameter, was oxidized for 30 seconds at a current density of 180 amps/sq. dcm. in a bath containing 45 per cent sulphuric acid and 3 per cent alkaline chlorides. It was then heated for one hour at 300‹ C., after which it could be wound upon a mandrel as small as 10 mms. in diameter without scaling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR985918T | 1943-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB601636A true GB601636A (en) | 1948-05-10 |
Family
ID=9537700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28064/45A Expired GB601636A (en) | 1943-11-11 | 1945-10-24 | Method of improving the oxide layers obtained upon aluminium and its alloys by electrolytic means |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH248218A (en) |
| FR (1) | FR985918A (en) |
| GB (1) | GB601636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3159556A (en) * | 1960-12-08 | 1964-12-01 | Bell Telephone Labor Inc | Stabilized tantalum film resistors |
| US3488262A (en) * | 1966-07-13 | 1970-01-06 | Clarence W Forestek | Method of heat treating hard anodized surfaces |
-
1943
- 1943-11-11 FR FR985918D patent/FR985918A/en not_active Expired
-
1945
- 1945-10-24 GB GB28064/45A patent/GB601636A/en not_active Expired
- 1945-10-25 CH CH248218D patent/CH248218A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3159556A (en) * | 1960-12-08 | 1964-12-01 | Bell Telephone Labor Inc | Stabilized tantalum film resistors |
| US3488262A (en) * | 1966-07-13 | 1970-01-06 | Clarence W Forestek | Method of heat treating hard anodized surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| FR985918A (en) | 1951-07-25 |
| CH248218A (en) | 1947-04-30 |
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