GB898179A - Improved process for treating zinc to improve corrosion resistance - Google Patents
Improved process for treating zinc to improve corrosion resistanceInfo
- Publication number
- GB898179A GB898179A GB4304160A GB4304160A GB898179A GB 898179 A GB898179 A GB 898179A GB 4304160 A GB4304160 A GB 4304160A GB 4304160 A GB4304160 A GB 4304160A GB 898179 A GB898179 A GB 898179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc
- solution
- corrosion resistance
- improved process
- alcohol
- 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
- C23C22/73—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 characterised by the process
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)
- Chemical Treatment Of Metals (AREA)
Abstract
The corrosion resistance of a zinc surface is improved by contacting it with a solution containing zinc ions and chromate ions in a ratio of zinc to chromate of 9:1 to 1:9,5. The temperature of the surface should be above the boiling point of the solvent for the solution and below the melting point of zinc so as to volatilise the volatile components of the solution immediately after the solution contacts the surface. Bodies made of zinc or zinc alloy or bodies coated with zinc or zinc alloy, e.g. galvanised articles, may be treated. The solution may be applied by spraying or by a roll, and may contain zinc chloride or zinc nitrate together with chromic acid, suitable solvents being water, alcohol and alcohol/water mixtures. Exemplified solutions also contain nitrates of magnesium, aluminium, cobalt and nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4304160A GB898179A (en) | 1960-12-14 | 1960-12-14 | Improved process for treating zinc to improve corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4304160A GB898179A (en) | 1960-12-14 | 1960-12-14 | Improved process for treating zinc to improve corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB898179A true GB898179A (en) | 1962-06-06 |
Family
ID=10427066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4304160A Expired GB898179A (en) | 1960-12-14 | 1960-12-14 | Improved process for treating zinc to improve corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB898179A (en) |
-
1960
- 1960-12-14 GB GB4304160A patent/GB898179A/en not_active Expired
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