GB727749A - Improvements in or relating to the anodic treatment of aluminium and aluminium alloys - Google Patents
Improvements in or relating to the anodic treatment of aluminium and aluminium alloysInfo
- Publication number
- GB727749A GB727749A GB17999/52A GB1799952A GB727749A GB 727749 A GB727749 A GB 727749A GB 17999/52 A GB17999/52 A GB 17999/52A GB 1799952 A GB1799952 A GB 1799952A GB 727749 A GB727749 A GB 727749A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- voltage
- bath
- alloys
- electrolyte
- 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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- 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
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- 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
- C25D11/12—Anodising more than once, e.g. in different baths
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
727,749. Anodic treatment of aluminium and its alloys. HIGH DUTY ALLOYS, Ltd. June 4, 1953 [July 16, 1952], No. 17999/52. Class 41. In a process for anodizing aluminium and aluminium alloys the voltage across the bath is increased either progressively or at intervals to maintain the power input (in watts applied to the bath) substantially constant throughout. The voltage is initially 18 to 20 volts and is gradually increased until the power input reaches the desired value which may be between 200 and 4000 watts per square foot of surface to be treated, after which the voltage is gradually increased as the current falls to maintain the product of the current and voltage constant. The electrolyte is agitated by a mechanical stirrer or by air bubbles; compressed air may be passed through porous ceramic pots covering the entire base of the bath. The surface supporting wires are protected by coating with high-melting-point wax or other insulating material. The electrolyte may be 2.5 to 30 per cent sulphuric acid in water and may contain up to 20 per cent of glycerol or other polyhydric alcohol or triethanolamine. The bath temperature may vary between - 5‹ and +20‹ C. The coatings obtained may be sealed in hot water, potassium dichromate solution, waxes, oils or greases, such as lanoline, and may be dyed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB325090X | 1952-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB727749A true GB727749A (en) | 1955-04-06 |
Family
ID=10339679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17999/52A Expired GB727749A (en) | 1952-07-16 | 1952-07-16 | Improvements in or relating to the anodic treatment of aluminium and aluminium alloys |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE521468A (en) |
| CH (1) | CH325090A (en) |
| FR (1) | FR1081074A (en) |
| GB (1) | GB727749A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3148099A (en) * | 1961-07-03 | 1964-09-08 | Graphtex Inc | Method of making aluminum foil nameplate |
| JPS5399048A (en) * | 1977-02-12 | 1978-08-30 | Ngk Insulators Ltd | Method of forming hard anode oxide film of aluminium |
| US4152221A (en) * | 1977-09-12 | 1979-05-01 | Nancy Lee Kaye | Anodizing method |
| US4214952A (en) * | 1978-02-28 | 1980-07-29 | Ngk Insulators, Ltd. | Electrochemical treatment process |
| CN112647105A (en) * | 2021-01-16 | 2021-04-13 | 郝云霞 | Hole sealing treatment method for aluminum alloy micro-arc oxidation ceramic membrane |
-
0
- BE BE521468D patent/BE521468A/xx unknown
-
1952
- 1952-07-16 GB GB17999/52A patent/GB727749A/en not_active Expired
-
1953
- 1953-07-10 CH CH325090D patent/CH325090A/en unknown
- 1953-07-10 FR FR1081074D patent/FR1081074A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3148099A (en) * | 1961-07-03 | 1964-09-08 | Graphtex Inc | Method of making aluminum foil nameplate |
| JPS5399048A (en) * | 1977-02-12 | 1978-08-30 | Ngk Insulators Ltd | Method of forming hard anode oxide film of aluminium |
| JPS5531197B2 (en) * | 1977-02-12 | 1980-08-16 | ||
| US4152221A (en) * | 1977-09-12 | 1979-05-01 | Nancy Lee Kaye | Anodizing method |
| US4214952A (en) * | 1978-02-28 | 1980-07-29 | Ngk Insulators, Ltd. | Electrochemical treatment process |
| CN112647105A (en) * | 2021-01-16 | 2021-04-13 | 郝云霞 | Hole sealing treatment method for aluminum alloy micro-arc oxidation ceramic membrane |
| CN112647105B (en) * | 2021-01-16 | 2021-12-28 | 江苏同生特钢制造有限公司 | Aluminum alloy surface treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1081074A (en) | 1954-12-15 |
| CH325090A (en) | 1957-10-31 |
| BE521468A (en) |
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