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900h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。
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.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2010年第1期57-62,68,共7页
China Surface Engineering
基金
湖北省自然科学基金资助项目(2003ABA077)
