摘要
为得到耐蚀性较高的多元合金镀层,在Al-Zn,Zn-Mg镀液中加入了Re,Al,Mg元素,获得了7种热镀锌层。通过全浸加速腐蚀试验、盐雾加速腐蚀试验(NSS)和电化学试验(Tafel,EIS),研究了加入元素对热镀锌基合金镀层耐蚀性能的影响,并初步探讨了镀层的耐蚀作用机理。结果表明:Re,Al,Mg均能提高锌基镀层的耐蚀性能;其中Zn-1%Al-2%Mg-0.1%Re合金镀层的耐蚀性能最佳,约为纯锌镀层的2倍。本研究不改变现有热镀锌生产线,有利于推广应用。
Seven kinds of hot-dipped Zn-alloy coatings were prepared by introducing Re,Al and Mg into Al-Zn and Zn-Mg plating baths.The influence of alloying elements Re,Al and Mg on the corrosion resistance of hot-dipped galvanized coatings was investigated by conducting immersion tests,salt-spray tests and electrochemical tests(Tafel,EIS),and the anticorrosion mechanism of the coatings was primarily explored.Results show that Re,Al and Mg can all increase the corrosion resistance of hot-dipped galvanizing coatings.Zn-1%Al-2%Mg-0.1%Re alloy coating had the best corrosion resistance,and its corrosion resistance was about twice as good as that of pure Zn coating.Hopefully,the established galvanizing technology can be applied in industry.
出处
《材料保护》
CAS
CSCD
北大核心
2011年第2期7-9,53,共4页
Materials Protection
关键词
热浸镀
混合稀土
Al
Mg
合金镀层
耐蚀性能
hot-dipped plating
mixed rare earth
aluminum
magnesium
alloy coating
corrosion resistance
作者简介
[通信作者]魏云鹤（1960-），教授，研究方向为表面工程、化学工艺，E-mail：weiyunhe@sdu．edu．cn
