GB508723A - Process for the production of protective layers on aluminium or aluminium alloys and magnesium or magnesium alloys - Google Patents
Process for the production of protective layers on aluminium or aluminium alloys and magnesium or magnesium alloysInfo
- Publication number
- GB508723A GB508723A GB4633/38A GB463338A GB508723A GB 508723 A GB508723 A GB 508723A GB 4633/38 A GB4633/38 A GB 4633/38A GB 463338 A GB463338 A GB 463338A GB 508723 A GB508723 A GB 508723A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesium
- per cent
- aluminium
- alloys
- zinc
- 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
Abstract
508,723. Electrolytic surface treatment of aluminium and magnesium and their alloys. MAGNESIUM ELEKTRON, Ltd. Feb. 15, 1938, Nos. 4633 and 4634. Convention dates, Feb. 25, 1937, and April 13, 1937. [Class 41] [Also in Group II] Protective. layers are produced on magnesium and magnesium base alloys by anodic treatment in a saturated or almost saturated aqueous solution of a neutral fluoride or silicofluoride the solubility of which is at least about 30 per cent at 20‹ C. Suitable fluorides are those of potassium and ammonium and double fluorides of zinc and alkali metals ; suitable silicofluorides are those of magnesium and zinc. The electrolyte may also consist of a saturated or almost saturated aqueous solution of a mixture of neutral fluorides and/or silicofluorides the joint solubility of which is at least about 30 per cent at 20‹ C. ; such an electrolyte is also applicable to the production of protective coatings on aluminium and aluminium base alloys by anodic treatment. The coatings are more absorptive than those obtained by the use of an electrolyte containing a single component. Mixtures of potassium and ammonium fluorides may be employed. The treatment is carried out with a current density of the order of 2 amps per sq. dcm., and without external supply of heat. Treatment of the following alloys is described (i) magnesium base alloy, containing 2-3 per cent of zinc and 5-6 per cent of aluminium ; (ii) magnesium base alloy, containing 2.5 per cent of manganese ; (iii) magnesium base alloy containing 9 per cent of aluminium, 1.5 per cent of zinc and 0.8 per cent of manganese ; (iv) alloy containing 93 per cent of aluminium and 7 per cent of magnesium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE504216X | 1937-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB508723A true GB508723A (en) | 1939-07-05 |
Family
ID=6546161
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4633/38A Expired GB508723A (en) | 1937-09-22 | 1938-02-15 | Process for the production of protective layers on aluminium or aluminium alloys and magnesium or magnesium alloys |
| GB4635/38A Expired GB504216A (en) | 1937-09-22 | 1938-02-15 | Process for the production of protective layers on aluminium or aluminium base alloys or magnesium or magnesium base alloys |
| GB13006/39A Expired GB528234A (en) | 1937-09-22 | 1939-05-01 | Process for the production of protective layers on aluminium or aluminium alloys of magnesium or magnesium alloys |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4635/38A Expired GB504216A (en) | 1937-09-22 | 1938-02-15 | Process for the production of protective layers on aluminium or aluminium base alloys or magnesium or magnesium base alloys |
| GB13006/39A Expired GB528234A (en) | 1937-09-22 | 1939-05-01 | Process for the production of protective layers on aluminium or aluminium alloys of magnesium or magnesium alloys |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE440323A (en) |
| CH (3) | CH207210A (en) |
| DE (4) | DE660409C (en) |
| FR (2) | FR834050A (en) |
| GB (3) | GB508723A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE764929C (en) * | 1938-11-09 | 1954-04-05 | Bosch Gmbh Robert | Process for producing fluoride-containing protective layers on workpieces made of magnesium and its alloys |
| US2431595A (en) * | 1942-08-06 | 1947-11-25 | Aluminum Co Of America | Method for cleaning aluminum |
| NL170633B (en) * | 1951-07-04 | Hoechst Ag | PROCESS FOR PREPARING POLYMER DISPERSIONS WITH LOW MONOMER CONTENT. | |
| DE1021229B (en) * | 1953-05-19 | 1957-12-19 | Magnesium Elektron Ltd | Application of the anodic treatment of alloys based on magnesium for the removal of molding sand contamination on castings made from such alloys |
| US3620939A (en) * | 1969-03-17 | 1971-11-16 | Us Army | Coating for magnesium and its alloys and method of applying |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1933301A (en) * | 1931-01-23 | 1933-10-31 | Gen Electric | Process for the treatment of metals |
| DE635720C (en) * | 1935-06-01 | 1936-09-25 | Siemens & Halske Akt Ges | Process for the production of protective coatings on magnesium and its alloys |
-
1937
- 1937-02-26 DE DEI57219D patent/DE660409C/en not_active Expired
- 1937-04-14 DE DEI57694D patent/DE661937C/en not_active Expired
- 1937-09-23 DE DEI59127D patent/DE743527C/en not_active Expired
-
1938
- 1938-02-03 CH CH207210D patent/CH207210A/en unknown
- 1938-02-03 CH CH207208D patent/CH207208A/en unknown
- 1938-02-15 GB GB4633/38A patent/GB508723A/en not_active Expired
- 1938-02-15 GB GB4635/38A patent/GB504216A/en not_active Expired
- 1938-02-21 FR FR834050D patent/FR834050A/en not_active Expired
- 1938-06-29 DE DE1938I0061747 patent/DE690603C/en not_active Expired
-
1939
- 1939-05-01 GB GB13006/39A patent/GB528234A/en not_active Expired
- 1939-05-05 FR FR50606D patent/FR50606E/en not_active Expired
- 1939-05-08 CH CH215595D patent/CH215595A/en unknown
-
1941
- 1941-01-16 BE BE440323D patent/BE440323A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR50606E (en) | 1941-01-27 |
| BE440323A (en) | 1941-02-28 |
| FR834050A (en) | 1938-11-09 |
| DE690603C (en) | 1940-04-30 |
| GB528234A (en) | 1940-10-24 |
| GB504216A (en) | 1939-04-21 |
| CH207210A (en) | 1939-10-15 |
| DE660409C (en) | 1938-05-24 |
| CH207208A (en) | 1939-10-15 |
| DE743527C (en) | 1944-03-31 |
| DE661937C (en) | 1938-06-30 |
| CH215595A (en) | 1941-06-30 |
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