GB584097A - Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion - Google Patents
Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosionInfo
- Publication number
- GB584097A GB584097A GB2463644A GB2463644A GB584097A GB 584097 A GB584097 A GB 584097A GB 2463644 A GB2463644 A GB 2463644A GB 2463644 A GB2463644 A GB 2463644A GB 584097 A GB584097 A GB 584097A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- magnesium
- per cent
- water
- against corrosion
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Chemically Coating (AREA)
Abstract
In a process for the protection against corrosion of magnesium and magnesium alloys, the metals are immersed in an aqueous solution containing nitric acid, chromic acid ions and .2 to 5 per cent. (by weight of the weight of water) of one or more chlorides. A bath containing 200 c.cs. nitric acid in one litre of water, 15 per cent. by weight of the total solution of sodium or potassium bichromate and 1 per cent. by weight of the weight of water of potassium chloride is stated to produce good results with a magnesium base alloy containing between 2 and 5 per cent. of aluminium. The amount of bichromate may vary between 2 and 25 per cent. by weight of the weight of total solution and the nitric acid between 70 and 300 c.cs. per litre of water. Specifications 287,450, [Class 82 (ii)], and 558,425 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2463644A GB584097A (en) | 1944-12-08 | 1944-12-08 | Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2463644A GB584097A (en) | 1944-12-08 | 1944-12-08 | Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion |
Publications (1)
Publication Number | Publication Date |
---|---|
GB584097A true GB584097A (en) | 1947-01-07 |
Family
ID=10214843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2463644A Expired GB584097A (en) | 1944-12-08 | 1944-12-08 | Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB584097A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2961358A (en) * | 1957-03-08 | 1960-11-22 | Amchem Prod | Method of forming a chromate conversion coating on magnesium |
-
1944
- 1944-12-08 GB GB2463644A patent/GB584097A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2961358A (en) * | 1957-03-08 | 1960-11-22 | Amchem Prod | Method of forming a chromate conversion coating on magnesium |
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