GB622215A - Improvements in or relating to process of forming protective coatings and the coatedproduct - Google Patents
Improvements in or relating to process of forming protective coatings and the coatedproductInfo
- Publication number
- GB622215A GB622215A GB678146A GB678146A GB622215A GB 622215 A GB622215 A GB 622215A GB 678146 A GB678146 A GB 678146A GB 678146 A GB678146 A GB 678146A GB 622215 A GB622215 A GB 622215A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- articles
- rinsed
- weight
- magnesium
- 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
- C25D11/30—Anodisation of magnesium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
622,215. Electrolytic treatment of magnesium. STEVENS, A. H. (Consolidated Vultee Aircraft Corporation). March 5, 1946, No. 6781. [Class 41] A process of forming a protective coating on magnesium, magnesium alloys or articles formed of such materials, comprises electrolytically treating them in an electrolyte containing 0.05 to 10 per cent by weight of phenol, which retards the formation of gases and enters into the coating. The preferred electrolyte contains 22 to 25 per cent by weight of sodium hydroxide, 0.2 to 0.3 per cent by weight of phenol, and 2 to 3 per cent by volume of sodium silicates. The articles may be cleaned by being subjected to a degreasing treatment immersed in an aqueous alkaline solution rinsed, immersed in an acid bath, preferably charged with chromic acid and calcium nitrate, and rinsed in hot water. The articles may also be cleaned electrolytically using direct current. For the protective coating alternating or direct current may be used, after which the articles are rinsed in cold water, then in boiling water and then in chromic acid solution. They are then dried in hot air and dipped in a sealing liquid consisting of zinc chromate primer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB678146A GB622215A (en) | 1946-03-05 | 1946-03-05 | Improvements in or relating to process of forming protective coatings and the coatedproduct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB678146A GB622215A (en) | 1946-03-05 | 1946-03-05 | Improvements in or relating to process of forming protective coatings and the coatedproduct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB622215A true GB622215A (en) | 1949-04-28 |
Family
ID=9820621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB678146A Expired GB622215A (en) | 1946-03-05 | 1946-03-05 | Improvements in or relating to process of forming protective coatings and the coatedproduct |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB622215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744872A (en) * | 1986-05-30 | 1988-05-17 | Ube Industries, Ltd. | Anodizing solution for anodic oxidation of magnesium or its alloys |
| CN111809215A (en) * | 2020-06-12 | 2020-10-23 | 东莞理工学院 | A kind of preparation method of magnesium alloy surface ceramic film |
-
1946
- 1946-03-05 GB GB678146A patent/GB622215A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744872A (en) * | 1986-05-30 | 1988-05-17 | Ube Industries, Ltd. | Anodizing solution for anodic oxidation of magnesium or its alloys |
| CN111809215A (en) * | 2020-06-12 | 2020-10-23 | 东莞理工学院 | A kind of preparation method of magnesium alloy surface ceramic film |
| CN111809215B (en) * | 2020-06-12 | 2021-08-24 | 东莞理工学院 | A kind of preparation method of magnesium alloy surface ceramic film |
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