| 摘要: |
| 介绍了Zn–Al–Mg–Ce合金的熔炼、制粉和环氧富Zn–Al–Mg–Ce合金防腐涂料的制备，并与环氧富Zn涂料、环氧富Zn+Al涂料和国外环氧富Zn防锈涂料进行了盐雾和盐水耐腐蚀性能对比试验，并分析了Zn–Al–Mg–Ce合金的电化学性能、显微组织及耐蚀机理。结果表明环氧富Zn–Al–Mg–Ce合金涂层比其他涂料腐蚀时间延迟900 h以上。稀土Ce在晶界偏聚及鳞片状合金微粉叠层结构是其高耐蚀的主要机理。 |
| 关键词: Zn-Al-Mg-Ce合金 防腐涂料 盐雾腐蚀 盐水腐蚀 |
| DOI： |
| 分类号: |
| 基金项目:湖北省自然科学基金资助项目(2003ABA077) |
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| Corrosion Resistance Performance of Epoxy Zn-Al-Mg-Ce Riched Alloy Coating |
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CONG Shan–hai, HOU Qiang
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College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081
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| Abstract: |
| On the basis of preparation of Zn–Al–Mg–Ce alloy powder from melting alloy, a kind of anti–corrosive paint consisted of epoxy and Zn–Al–Mg–Ce alloy powders is prepared in this paper. By testing salt mist and salt water corrosion properties of epoxy/Zn–Al–Mg–Ce, epoxy/Zn, and epoxy/Zn–Al coating, it is found that anti–corrosive time of epoxy/Zn–Al– Mg–Ce coating prolongs 900 h in comparison with other coatings. Furthermore, the galvano–chemistry properties, microstructure, and anti–corrosive mechanism of Zn–Al–Mg–Ce alloy are analyzed, and anti–corrosive mechanism related to segregation of element Ce at grain boundary and special flaky morphology of alloy is obtained. |
| Key words: Zn-Al-Mg-Ce alloy anti-corrosive paint salt mist corrosion salt water corrosion |
