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Journal of Shanghai University（Natural Science Edition）

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Composition Optimization of Zn-Al Hot-Dip Coatings Using Combinatorial Material Chip Approach

ZHU Li-hui1,ZHU Shuo-jin1,LIU Qian2,LIU Qing-feng2,WANG Li3   

  1. 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China；2. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China；3. Technology Center, Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
  • Received:2008-05-08 Revised:1900-01-01 Online:2008-10-23 Published:2008-10-23
  • Contact: ZHU Li-hui

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Abstract: Combinatorial material chip approach is innovation in materials research. It can discover and optimize new materials efficiently and quickly. Combinatorial material chip approach suggests that Al content should be controlled in the range of 50%~75% for Zn-Al hot-dip coatings with good mechanical properties and anticorrosion behavior. Especially, 72.6Al-Zn has excellent properties. Corrosion behaviors of hot-dip Zn, 55Al-Zn and 72Al-Zn coatings were compared and the corrosion mechanisms were studied. The results show that the anticorrosion property of 72Al-Zn coating is slightly better than 55Al-Zn coating, and both are much better than Zn coating. It indicates that combinatorial material chip approach can be applied for the composition optimization of anticorrosion Zn-Al hot-dip coatings.

Key words: anticorrosion behavior, hot-dip coatings, combinatorial material chip approach