GB896810A - A process for protecting zinc against corrosion - Google Patents
A process for protecting zinc against corrosionInfo
- Publication number
- GB896810A GB896810A GB33281/59A GB3328159A GB896810A GB 896810 A GB896810 A GB 896810A GB 33281/59 A GB33281/59 A GB 33281/59A GB 3328159 A GB3328159 A GB 3328159A GB 896810 A GB896810 A GB 896810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- against corrosion
- zinc against
- protecting zinc
- protecting
- galvanised
- 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)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The zinc layer of a galvanised article is protected against corrosion by immersing it in an aqueous solution containing 0,7-1,2% w/v of an oxidising compound of hexavalent chromium, 0,005-0,02% v/v sulphuric acid (S.G. 1,84), and 0,02-0,35% v/v wetting agent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT896810X | 1959-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB896810A true GB896810A (en) | 1962-05-16 |
Family
ID=11331660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33281/59A Expired GB896810A (en) | 1959-04-01 | 1959-10-01 | A process for protecting zinc against corrosion |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB896810A (en) |
-
1959
- 1959-10-01 GB GB33281/59A patent/GB896810A/en not_active Expired
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