JPS56156779A - Surface treatment of zinc or zinc alloy - Google Patents
Surface treatment of zinc or zinc alloyInfo
- Publication number
- JPS56156779A JPS56156779A JP5840980A JP5840980A JPS56156779A JP S56156779 A JPS56156779 A JP S56156779A JP 5840980 A JP5840980 A JP 5840980A JP 5840980 A JP5840980 A JP 5840980A JP S56156779 A JPS56156779 A JP S56156779A
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- contg
- aqueous
- soln
- zinc alloy
- 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.)
- Granted
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
- C23C22/30—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 containing also trivalent chromium
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)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
PURPOSE:To form a surface treated coat having high naked corrosion resistance and leaching out no Cr on the surface of zinc or zinc alloy by applying an acidic aqueous soln. contg. an aqueous Cr compound contg. traivalent Cr, SO4<2-> and a polycarboxylic acid resin as principal components to the zinc or zinc alloy surface and further coating the surface with an olefin resin. CONSTITUTION:A Cr-contg. aqueous soln. of <=3.5pH is applied to the surface of zinc or zinc alloy. The soln. contains 1-100g/l aqueous Cr compound having Cr<3+>/total Cr of <=50, especially 20-35wt% which is obtd. e.g. by the partial reduction of Cr2O3, 0.2-2.0g/l SO4<2-> and a 0.02-30g/l polycarboxylic acid resin such as polyacrylic acid as principal components. The resulting film is washed, and an aqueous soln. contg. an olefin resin contg. carboxyl groups as a principal component is applied to the film and dried to form a 0.2-1mum thick coat. Said olefin resin contains 5-30% carboxyl groups >=50% of which have been neutralized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5840980A JPS5853069B2 (en) | 1980-04-30 | 1980-04-30 | Surface treatment method for zinc or zinc alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5840980A JPS5853069B2 (en) | 1980-04-30 | 1980-04-30 | Surface treatment method for zinc or zinc alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56156779A true JPS56156779A (en) | 1981-12-03 |
| JPS5853069B2 JPS5853069B2 (en) | 1983-11-26 |
Family
ID=13083563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5840980A Expired JPS5853069B2 (en) | 1980-04-30 | 1980-04-30 | Surface treatment method for zinc or zinc alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5853069B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104673A (en) * | 1988-10-13 | 1990-04-17 | Sumitomo Metal Ind Ltd | Chromated galvanized steel material having light color tone |
-
1980
- 1980-04-30 JP JP5840980A patent/JPS5853069B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104673A (en) * | 1988-10-13 | 1990-04-17 | Sumitomo Metal Ind Ltd | Chromated galvanized steel material having light color tone |
| JPH0536514B2 (en) * | 1988-10-13 | 1993-05-31 | Sumitomo Metal Ind |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5853069B2 (en) | 1983-11-26 |
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