GB537474A - Improvements in and relating to the anodic treatment of aluminium and its alloys - Google Patents
Improvements in and relating to the anodic treatment of aluminium and its alloysInfo
- Publication number
- GB537474A GB537474A GB3088439A GB3088439A GB537474A GB 537474 A GB537474 A GB 537474A GB 3088439 A GB3088439 A GB 3088439A GB 3088439 A GB3088439 A GB 3088439A GB 537474 A GB537474 A GB 537474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- treatment
- alloys
- electrolyte
- class
- 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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
537,474. Electrolytic surface treatment of aluminium. BOWEN, E. WINDSOR-, and GOWER, C. H. R. Nov. 27, 1939, No. 30884. [Class 41] An electrolyte for anodic treatment of all forms of aluminium or its alloys contains 3¢-7 per cent. of chromic acid, 1-3 of a polyhydric alcohol, e.g. glycerol, and/or an aldehyde, e.g. formaldehyde, 0.3-0.5 of boric acid, and preferably up to 2 per cent. of soluble chromates. A temperature of 80-120‹F. is maintained, using a water-jacket or internal piping, the electrolyte being agitated by air. The initial current density may be 40 amps. per square foot at 10 volts, the voltage being raised to about 40 after 10-20 minutes, and the treatment may take 30 to 80 minutes. Specification 223,994, [Class 41], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3088439A GB537474A (en) | 1939-11-27 | 1939-11-27 | Improvements in and relating to the anodic treatment of aluminium and its alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3088439A GB537474A (en) | 1939-11-27 | 1939-11-27 | Improvements in and relating to the anodic treatment of aluminium and its alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB537474A true GB537474A (en) | 1941-06-24 |
Family
ID=10314630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3088439A Expired GB537474A (en) | 1939-11-27 | 1939-11-27 | Improvements in and relating to the anodic treatment of aluminium and its alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB537474A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837121A (en) * | 1997-10-10 | 1998-11-17 | Kemet Electronics Corporation | Method for anodizing valve metals |
| US6149793A (en) * | 1998-06-04 | 2000-11-21 | Kemet Electronics Corporation | Method and electrolyte for anodizing valve metals |
| US6162345A (en) * | 1998-08-28 | 2000-12-19 | Kemet Electronics Corporation | Method of anodizing a metal anode prepared from very fine metal powder |
| US6183618B1 (en) | 1999-02-02 | 2001-02-06 | Kemet Electronics Corporation | Process for treating impregnated electrolytic capacitor anodes |
| US6235181B1 (en) | 1999-03-10 | 2001-05-22 | Kemet Electronics Corporation | Method of operating process for anodizing valve metals |
| US6267861B1 (en) | 2000-10-02 | 2001-07-31 | Kemet Electronics Corporation | Method of anodizing valve metals |
| US6436268B1 (en) | 2000-08-02 | 2002-08-20 | Kemet Electronics Corporation | Non-aqueous electrolytes for anodizing |
-
1939
- 1939-11-27 GB GB3088439A patent/GB537474A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837121A (en) * | 1997-10-10 | 1998-11-17 | Kemet Electronics Corporation | Method for anodizing valve metals |
| US5935408A (en) * | 1997-10-10 | 1999-08-10 | Kemet Electronics Corporation | Electrolyte for anodizing valve metals |
| US6149793A (en) * | 1998-06-04 | 2000-11-21 | Kemet Electronics Corporation | Method and electrolyte for anodizing valve metals |
| US6162345A (en) * | 1998-08-28 | 2000-12-19 | Kemet Electronics Corporation | Method of anodizing a metal anode prepared from very fine metal powder |
| US6183618B1 (en) | 1999-02-02 | 2001-02-06 | Kemet Electronics Corporation | Process for treating impregnated electrolytic capacitor anodes |
| US6235181B1 (en) | 1999-03-10 | 2001-05-22 | Kemet Electronics Corporation | Method of operating process for anodizing valve metals |
| US6436268B1 (en) | 2000-08-02 | 2002-08-20 | Kemet Electronics Corporation | Non-aqueous electrolytes for anodizing |
| US6896782B2 (en) | 2000-08-02 | 2005-05-24 | Kemet Electronics Corporation | Capacitor prepared from a non-aqueous electrolyte |
| US6267861B1 (en) | 2000-10-02 | 2001-07-31 | Kemet Electronics Corporation | Method of anodizing valve metals |
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