| SHEN Pin-hua,QIAN Bao-liang.Preparation Process of Trivalent Chromium Blue White Passivating Film with High Corrosion Resistance[J],36(2):70-72 |
| Preparation Process of Trivalent Chromium Blue White Passivating Film with High Corrosion Resistance |
| Received:January 15, 2007 Revised:April 10, 2007 |
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| DOI： |
| KeyWord:Zinc passivating Blue white Trivalent Chromium High corrosion resistance |
| Author | Institution |
| SHEN Pin-hua |
Shanghai Yongshen Auxiliary Agent factory, Shanghai , China |
| QIAN Bao-liang |
Shanghai Yongshen Auxiliary Agent factory, Shanghai , China |
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| Abstract: |
| Poor corrosion resistance of blue white passivating layer on zinc plated layer is a long-term problem which can not be settled in electroplating trade. The blue white passivating film of trivalent chromium is similar to that of hexavalent chromium. This is the reason that the blue white passivating film is too thin. So, in order to settle the problem, a kind of process to acquire compare thick passivating film, high corrosion resisting rCVX-3TC trivalent chromium blue white desensitizer and its means were successful obtained. The white rust appears after 240h in salt spray test, thus the poor corrosion resistance of blue white passivating film can be settled. |
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