GB1513366A - Method of forming a coloured oxide film on aluminum and aluminum alloys - Google Patents
Method of forming a coloured oxide film on aluminum and aluminum alloysInfo
- Publication number
- GB1513366A GB1513366A GB13263/77A GB1326377A GB1513366A GB 1513366 A GB1513366 A GB 1513366A GB 13263/77 A GB13263/77 A GB 13263/77A GB 1326377 A GB1326377 A GB 1326377A GB 1513366 A GB1513366 A GB 1513366A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminum
- acid
- objects
- forming
- oxide film
- 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
- C25D11/14—Producing integrally coloured layers
Abstract
In order to form an oxide layer, which has a colour ranging from yellow to black, on the degreased objects, said objects are subjected to an anodic oxidation treatment by means of direct current, alternating current or direct current superimposed with alternating current. The fresh electrolyte employed for the electrolysis in the immersion process contains 5-500 g/l of sulphofumaric acid and additionally up to 30 g/l of an inorganic acid or up to 50 g/l of another organic acid or a metal salt of sulphuric acid. The process is simple and can be carried out at BOD and COD values lower than any obtained so far, in a short treatment time and employing a low current density. Excellent colour absorption is achieved at a high electrolytic efficiency. The process is very economical and is particularly suitable for mass production.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4124776A JPS52124441A (en) | 1976-04-14 | 1976-04-14 | Process for forming colored oxide coating on aluminum or aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1513366A true GB1513366A (en) | 1978-06-07 |
Family
ID=12603097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13263/77A Expired GB1513366A (en) | 1976-04-14 | 1977-03-29 | Method of forming a coloured oxide film on aluminum and aluminum alloys |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS52124441A (en) |
| CH (1) | CH628688A5 (en) |
| DE (1) | DE2713985C3 (en) |
| FR (1) | FR2348287A1 (en) |
| GB (1) | GB1513366A (en) |
| IT (1) | IT1075694B (en) |
| NO (1) | NO145695C (en) |
| SE (1) | SE428220B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1538457A (en) * | 1967-07-21 | 1968-09-06 | Pechiney | Self-coloring anodizing process for aluminum and its alloys |
| FR1573033A (en) * | 1968-02-09 | 1969-07-04 | ||
| DE1913574C3 (en) * | 1969-03-18 | 1974-10-03 | Friedr. Blasberg Gmbh & Co, Kg, 5650 Solingen | Aqueous bath and process for color anodizing aluminum and aluminum alloys |
-
1976
- 1976-04-14 JP JP4124776A patent/JPS52124441A/en active Granted
-
1977
- 1977-03-29 GB GB13263/77A patent/GB1513366A/en not_active Expired
- 1977-03-30 DE DE2713985A patent/DE2713985C3/en not_active Expired
- 1977-04-06 SE SE7704083A patent/SE428220B/en not_active IP Right Cessation
- 1977-04-13 NO NO771273A patent/NO145695C/en unknown
- 1977-04-13 FR FR7711015A patent/FR2348287A1/en active Granted
- 1977-04-13 IT IT22382/77A patent/IT1075694B/en active
- 1977-04-14 CH CH464377A patent/CH628688A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2348287A1 (en) | 1977-11-10 |
| SE428220B (en) | 1983-06-13 |
| DE2713985A1 (en) | 1977-11-03 |
| DE2713985B2 (en) | 1980-04-10 |
| JPS52124441A (en) | 1977-10-19 |
| SE7704083L (en) | 1977-10-15 |
| NO145695B (en) | 1982-02-01 |
| NO771273L (en) | 1977-10-17 |
| FR2348287B1 (en) | 1981-02-20 |
| CH628688A5 (en) | 1982-03-15 |
| IT1075694B (en) | 1985-04-22 |
| DE2713985C3 (en) | 1980-12-04 |
| NO145695C (en) | 1982-05-12 |
| JPS559476B2 (en) | 1980-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |