GB359494A - Improvements in and relating to the formation of aluminium hydroxide on aluminium, aluminium alloys and aluminium coated articles - Google Patents
Improvements in and relating to the formation of aluminium hydroxide on aluminium, aluminium alloys and aluminium coated articlesInfo
- Publication number
- GB359494A GB359494A GB2218730A GB2218730A GB359494A GB 359494 A GB359494 A GB 359494A GB 2218730 A GB2218730 A GB 2218730A GB 2218730 A GB2218730 A GB 2218730A GB 359494 A GB359494 A GB 359494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- per cent
- alloys
- electrolyte containing
- acid
- 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)
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
359,494. Electrolytic treatment of aluminium and its alloys. SHEPPARD, S. R., 61, London Road, Redhill, Surrey. July 23, 1930, No. 22187. Grant of Patent opposed. [Class 41.] Articles made of or coated with aluminium or its alloys are provided with a resistant hydroxide coating by anodic treatment in an electrolyte containing a mono- or polyhydric alcohol. An acid such as sulphuric or acetic acid is preferably present. By employing an electrolyte containing 5 per cent sulphuric acid and 5 per cent glycerine a hard coating is contained, while an electrolyte containing 25 per cent sulphuric acid and 20 per cent glycerine gives a coating which may be stretched without fracture. Other suitable electrolytes contain 5 cc. of sulphuric acid and 25 cc. of glycol or 30 cc. of ethyl alcohol to 100 cc. of water. Amyl alcohol may also be employed. A current density of 8 amps. per square foot at 16 volts may be used. The temperature is maintained at 27‹ C. A lead- or glass-lined vat and cathodes of lead or carbon plates are employed. The articles should be cleaned before treatment.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL33374D NL33374C (en) | 1930-07-23 | ||
| BE381526D BE381526A (en) | 1930-07-23 | ||
| GB2218730A GB359494A (en) | 1930-07-23 | 1930-07-23 | Improvements in and relating to the formation of aluminium hydroxide on aluminium, aluminium alloys and aluminium coated articles |
| FR722063D FR722063A (en) | 1930-07-23 | 1931-07-23 | Improvements to the production processes of anodic coatings of aluminum and products thus obtained |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2218730A GB359494A (en) | 1930-07-23 | 1930-07-23 | Improvements in and relating to the formation of aluminium hydroxide on aluminium, aluminium alloys and aluminium coated articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB359494A true GB359494A (en) | 1931-10-23 |
Family
ID=10175346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2218730A Expired GB359494A (en) | 1930-07-23 | 1930-07-23 | Improvements in and relating to the formation of aluminium hydroxide on aluminium, aluminium alloys and aluminium coated articles |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE381526A (en) |
| FR (1) | FR722063A (en) |
| GB (1) | GB359494A (en) |
| NL (1) | NL33374C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897125A (en) * | 1954-06-21 | 1959-07-28 | Sanford Process Co Inc | Electrolytic process for producing oxide coatings on aluminum and aluminum alloys |
-
0
- BE BE381526D patent/BE381526A/xx unknown
- NL NL33374D patent/NL33374C/xx active
-
1930
- 1930-07-23 GB GB2218730A patent/GB359494A/en not_active Expired
-
1931
- 1931-07-23 FR FR722063D patent/FR722063A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897125A (en) * | 1954-06-21 | 1959-07-28 | Sanford Process Co Inc | Electrolytic process for producing oxide coatings on aluminum and aluminum alloys |
Also Published As
| Publication number | Publication date |
|---|---|
| BE381526A (en) | |
| NL33374C (en) | |
| FR722063A (en) | 1932-03-11 |
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