GB892768A - Surface treatment of aluminium and aluminium alloys - Google Patents
Surface treatment of aluminium and aluminium alloysInfo
- Publication number
- GB892768A GB892768A GB580559A GB580559A GB892768A GB 892768 A GB892768 A GB 892768A GB 580559 A GB580559 A GB 580559A GB 580559 A GB580559 A GB 580559A GB 892768 A GB892768 A GB 892768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- article
- during
- electrolyte
- feb
- 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
-
- 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
-
- 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)
- Paints Or Removers (AREA)
Abstract
892,768. Anodising aluminium. NAPIER & SON Ltd., D. Feb. 9, 1960 [Feb. 19, 1959], No. 5805/59. Class 41. An article consisting of a substantial proportion of aluminium is placed in an electrolyte, the temperature of which is maintained at about - 8‹ C., the article being arranged in an electric circuit so as to act as anode in the electrolyte, and D.C. is passed through the circuit, the applied voltage being increased progressively during a first stage of about 3 to 4 minutes to maintain a substantially constant C.D. of about 2 amps./sq. inch, and then held substantially constant during a second stage of about 15 minutes during which the C.D. progressively falls. The article may be continuously agitated during treatment. The surfaces to be treated may first be cleaned by hot alkali and abrasives; parts not to be treated may be painted with a " stop-off " lacquer followed by a wax coating. A suitable electrolyte is 10% by volume sulphuric acid, containing some glycerine. The article may finally be sealed in a silicone oil bath at 170‹ C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB580559A GB892768A (en) | 1959-02-19 | 1959-02-19 | Surface treatment of aluminium and aluminium alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB580559A GB892768A (en) | 1959-02-19 | 1959-02-19 | Surface treatment of aluminium and aluminium alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB892768A true GB892768A (en) | 1962-03-28 |
Family
ID=9802942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB580559A Expired GB892768A (en) | 1959-02-19 | 1959-02-19 | Surface treatment of aluminium and aluminium alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB892768A (en) |
-
1959
- 1959-02-19 GB GB580559A patent/GB892768A/en not_active Expired
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