Patent AT-E40158-T1: [Translated] PROCESS FOR GENERATION OF CHROMATE COATINGS.
A method of treating a zinc plated steel surface provides improved corrosion resistance and painting properties. The surface is rendered cathodic in the presence of an aqueous treatment liquor containing 5-70 g/l of hexavalent chromium, 0.01 to 5 g/l of trivalent chromium, 5-100 g/l of silica and/or silicate and 0.05-10 g/l of nitrate in which the ratio of Cr3+/Cr6+ is within the range 1/50-1/3.
Complete Metadata
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| description | A method of treating a zinc plated steel surface provides improved corrosion resistance and painting properties. The surface is rendered cathodic in the presence of an aqueous treatment liquor containing 5-70 g/l of hexavalent chromium, 0.01 to 5 g/l of trivalent chromium, 5-100 g/l of silica and/or silicate and 0.05-10 g/l of nitrate in which the ratio of Cr3+/Cr6+ is within the range 1/50-1/3. |
| distribution |
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| identifier | https://healthdata.gov/api/views/iwka-zs65 |
| issued | 2025-09-05 |
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| modified | 2025-09-06 |
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| theme |
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| title | Patent AT-E40158-T1: [Translated] PROCESS FOR GENERATION OF CHROMATE COATINGS. |
