| TIAN Piao-piao,XU Li-ping,ZHANG Zhen-hai,YANG Xing-liang,ZHANG Qian-feng.Performance and Characterization of Silane-Zirconium Nitrate Composite Conversion Coating on the Galvanized Sheet[J],43(1):71-76 |
| Performance and Characterization of Silane-Zirconium Nitrate Composite Conversion Coating on the Galvanized Sheet |
| Received:August 30, 2013 Revised:September 23, 2013 |
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| DOI： |
| KeyWord:organic silane conversion film zirconium nitrate corrosion resistance |
| Author | Institution |
| TIAN Piao-piao |
Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma忆anshan , China |
| XU Li-ping |
Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma忆anshan , China |
| ZHANG Zhen-hai |
Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma忆anshan , China |
| YANG Xing-liang |
Technique Center, Ma忆anshan Iron & Steel Co. , Ltd, Ma忆anshan , China |
| ZHANG Qian-feng |
Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma'anshan , China |
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| Abstract: |
| Objective To get a conversion coating with superior anti-corrosion performance. Methods The KH560-KH791-zirconium nitrate composite passivation solution was obtained by means of compositing and hydrolyzing two organic silanes followed by addition of zirconium nitrate. The solution was used on the galvanized sheet and the performances of the conversion coatings formed were comparatively characterized by salt water immersion testing, neutral salt spray testing and adhesion testing with the coatings prepared without adding zirconium nitrate. Results In the 72 h salt water immersion test and neutral salt spray test, the conversion coating prepared with the addition of zirconium nitrate was much better than that prepared without zirconium nitrate addition, and in both cases the adhesion test results reached Level 1. Conclusion the participation of corrosion inhibitor zirconium nitrate may fill the gaps in the coating, resulting in higher resistance to penetration of corrosive medium and further improvement of the anti-corrosion performance of the passivated coating. |
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