GB1147907A - Improvements in or relating to the anodizing of aluminium - Google Patents
Improvements in or relating to the anodizing of aluminiumInfo
- Publication number
- GB1147907A GB1147907A GB2617066A GB2617066A GB1147907A GB 1147907 A GB1147907 A GB 1147907A GB 2617066 A GB2617066 A GB 2617066A GB 2617066 A GB2617066 A GB 2617066A GB 1147907 A GB1147907 A GB 1147907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anodizing
- article
- aluminium
- produce
- aqueous
- 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
- C25D11/12—Anodising more than once, e.g. in different baths
-
- 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
- C25D11/14—Producing integrally coloured layers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Cookers (AREA)
Abstract
1,147,907. Anodizing aluminium. KAISER ALUMINUM & CHEMICAL CORP. June 13, 1966 [June 22, 1965], No. 26170/66. Heading C7B. A process for producing a coloured anodized aluminium article comprises anodizing the article in an aqueous H 2 SO 4 electrolyte to produce a colourless anodic oxide coating on its surface and subsequently anodizing the article in an aqueous electrolyte containing 0À1% to 4% by weight of H 2 SO 4 and sulphosalicylic acid, sulphophthalic acid, sulphoresorcinol or lignosulphonic acid in an amount of at least 20 g/l to produce an integrallycoloured anodic oixde coating on the surface of the article. The term aluminium includes Al base alloys, e. g. Al containing Cr or Si. Prior to anodizing, the A1 article may be cleaned with aqueous solutions of (1) an alkaline cleaner, (2) HNO 3 and (3) NaOH. During the anodizing step to produce the coloured coating, a constant current density may be used until some predetermined maximum voltage is reached after which that voltage is maintained constant until the anodizing is completed. After anodizing, the article may be sealed by dipping it in an aqueous solution at 200‹ F. of sodium lignosulphonate and nickel acetate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46612165A | 1965-06-22 | 1965-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1147907A true GB1147907A (en) | 1969-04-10 |
Family
ID=23850566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2617066A Expired GB1147907A (en) | 1965-06-22 | 1966-06-13 | Improvements in or relating to the anodizing of aluminium |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE682849A (en) |
| CH (1) | CH469099A (en) |
| DE (1) | DE1496874B2 (en) |
| GB (1) | GB1147907A (en) |
| NL (2) | NL6608386A (en) |
-
0
- NL NL134964D patent/NL134964C/xx active
-
1965
- 1965-06-13 CH CH847766A patent/CH469099A/en unknown
-
1966
- 1966-06-08 DE DE19661496874 patent/DE1496874B2/en active Pending
- 1966-06-13 GB GB2617066A patent/GB1147907A/en not_active Expired
- 1966-06-16 NL NL6608386A patent/NL6608386A/xx unknown
- 1966-06-21 BE BE682849D patent/BE682849A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1496874A1 (en) | 1970-11-05 |
| DE1496874B2 (en) | 1972-06-08 |
| NL134964C (en) | |
| BE682849A (en) | 1966-12-01 |
| NL6608386A (en) | 1966-12-23 |
| CH469099A (en) | 1969-02-28 |
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