GB401270A - Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles - Google Patents
Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articlesInfo
- Publication number
- GB401270A GB401270A GB1250232A GB1250232A GB401270A GB 401270 A GB401270 A GB 401270A GB 1250232 A GB1250232 A GB 1250232A GB 1250232 A GB1250232 A GB 1250232A GB 401270 A GB401270 A GB 401270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- treatment
- aluminium
- coating
- oxide coating
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/84—Dyeing
-
- 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
- C25D11/24—Chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A coloured coating, which may also have corrosion-resisting properties, is formed on aluminium or aluminium alloy by forming on the surface an adsorbent oxide coating and then precipitating in the coating a coloured metallic oxide by treating first with a solution of a metallic compound and then with an oxidizing agent in solution, or vice versa. The adsorbent oxide coating may be produced by anodic treatment in sulphuric or chromic acid solutions, or chemically by treatment in a boiling solution of sodium carbonate and potassium dichromate. Details of concentration, temperature, and current density are given. The metallic compound used in the subsequent treatment may be a lead salt, e.g. the acetate or nitrate, for the production of a brown oxide coating, or a cobalt salt, e.g. the acetate, nitrate, sulphate, or chloride, for the production of a very dark brown or black oxide coating. The oxidizing agent used is preferably a solution of potassium permanganate but may be, for example, a solution of a hypochlorite or chlorine water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1250232A GB401270A (en) | 1932-04-30 | 1932-04-30 | Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1250232A GB401270A (en) | 1932-04-30 | 1932-04-30 | Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB401270A true GB401270A (en) | 1933-10-30 |
Family
ID=10005764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250232A Expired GB401270A (en) | 1932-04-30 | 1932-04-30 | Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB401270A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001103A (en) * | 1977-07-18 | 1979-01-24 | Alusuisse | Processes for corrosion resistant characteristics |
| CN112342590A (en) * | 2020-10-20 | 2021-02-09 | 桂林理工大学 | Preparation method of super-hydrophobic colored film on surface of aluminum alloy |
-
1932
- 1932-04-30 GB GB1250232A patent/GB401270A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001103A (en) * | 1977-07-18 | 1979-01-24 | Alusuisse | Processes for corrosion resistant characteristics |
| GB2001103B (en) * | 1977-07-18 | 1982-01-27 | Alusuisse | Processes for improving corrosion resistant characteristics |
| CN112342590A (en) * | 2020-10-20 | 2021-02-09 | 桂林理工大学 | Preparation method of super-hydrophobic colored film on surface of aluminum alloy |
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