GB506466A - Method of treating electrolytic coatings on magnesium and magnesium alloys - Google Patents
Method of treating electrolytic coatings on magnesium and magnesium alloysInfo
- Publication number
- GB506466A GB506466A GB18981/38A GB1898138A GB506466A GB 506466 A GB506466 A GB 506466A GB 18981/38 A GB18981/38 A GB 18981/38A GB 1898138 A GB1898138 A GB 1898138A GB 506466 A GB506466 A GB 506466A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- sodium
- dichromate
- potassium
- 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
506,466. Treatment of anodized magnesium. BUZZARD, R. W. June 27, 1938, No. 18981. Convention date, June 29, 1937. [Class 41] The corrosion resistance of coatings produced on magnesium and magnesium base alloys by an odic treatment is improved by immersion in a hot acid reacting solution containing (i) a chromate and/or dichromate, and (ii) a soluble sulphate, phosphate, borate or fluoride or a salt of chromium or manganese or a combination of these salts The immersion liquid is preferably at or near its boiling point. The concentration of the immersion bath may be from 0À25 per cent up to saturation. Suitable baths contain (i) 1-30 per cent of sodium, potassium or ammonium dichromate, 8-12 per cent manganous sulphate, (ii) 1-30 per cent sodium, potassium or ammonium dichromate, 0À25-10 per cent chromium fluoride, (iii) 8-12 per cent sodium, potassium or anunon- ium dichromate, 3-7 per cent sodium borate, (iv) 8-12 per cent sodium, potassium or ammonium dichromate, 8-12 per cent sodium phosphate, (v) 1-3 per cent zinc chromate, 3-7 per cent sodium dichromato, 1-3 per cent chromium fluoride. The treatment may comprise immersion in a bath containing a chromate and/or dichromate and a phosphate followed by immersion in a bath containing a dichromate, manganous sulphate and chromium fluoride. The anodizing bath may contain 10 per cent of sodium, potassium or ammonium dichromate and 2 per cent of monobasic sodium or ammonium phosphate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US506466XA | 1937-06-29 | 1937-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506466A true GB506466A (en) | 1939-05-30 |
Family
ID=21966502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18981/38A Expired GB506466A (en) | 1937-06-29 | 1938-06-27 | Method of treating electrolytic coatings on magnesium and magnesium alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB506466A (en) |
-
1938
- 1938-06-27 GB GB18981/38A patent/GB506466A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB391903A (en) | Improvements in or relating to the surface treatment of aluminium or aluminium alloys | |
| GB495190A (en) | An improved electrolytic method of coating surfaces of iron or steel | |
| GB436154A (en) | Improvements in or relating to the production of bright aluminium surfaces | |
| GB534471A (en) | Improvements in or relating to the production of protective coatings on magnesium and magnesium alloys | |
| US3032487A (en) | Electrolytic treatment of ferrous metal surfaces | |
| GB952255A (en) | Solution and method for brightening cadmium | |
| ES312338A1 (en) | Electrodeposition process with pretreatment in zinc phosphate solution containing fluoride | |
| GB954033A (en) | Improvements in or relating to electrodepositing chromium | |
| GB506466A (en) | Method of treating electrolytic coatings on magnesium and magnesium alloys | |
| GB625041A (en) | Improvements in and relating to the production of corrosion resistant metal and alloy articles | |
| US3870608A (en) | Process for coloring aluminum or aluminum alloys by anodizing with imperfectly rectified current | |
| GB869395A (en) | Improvements relating to the production of chemical coatings on zinc and zinc alloys | |
| GB631829A (en) | Improvements in or relating to the colouring of oxide-coated aluminium and aluminium alloy articles | |
| GB469571A (en) | Process for the anodic coating of aluminium and aluminium alloys and electrolytes therefor | |
| GB510353A (en) | Improvements in or relating to the protection of magnesium and magnesium alloys against corrosion | |
| US1747776A (en) | Production of dark oxidic coatings on magnesium and magnesium alloys | |
| GB447420A (en) | Improvements in and relating to the production of anodic coatings on aluminium or aluminium alloys | |
| GB395390A (en) | Improvements in and relating to the electrolytic treatment of aluminium or its alloys | |
| GB414966A (en) | Anodic coating of zinc base metals | |
| US2231086A (en) | Method of producing oxide coated aluminum and aluminum base alloys and electrolyte therefor | |
| GB1186729A (en) | Electroplating Chromium onto Continuous Metal Strip | |
| GB1044962A (en) | Producing a protective coating on metal by cathodic coating | |
| ES356925A1 (en) | Coating of Iron or Iron Alloys | |
| GB467267A (en) | Improvements in or relating to the production of protective coatings on aluminium and aluminium alloys | |
| DE882178C (en) | Process for the black coloring of objects made of aluminum and its alloys |