采用电沉积的方法，制备了Zn-Fe-SiO2复合镀层，对比了该镀层与Zn-Fe合金镀层及Zn镀层的耐蚀性，并研究了镀层成分对镀层耐蚀性的影响，发现该复合镀层无需钝化处理即具有很高的耐蚀性，而且镀层在酸性溶液中的耐蚀性随着镀层中Fe含量的增大而提高，在中性溶液中的耐蚀性随着镀层中SiO2含量的增大而提高.
CORROSION RESISTANCE OF ELECTRODEPOSITED Zn-Fe-SiO2 COMPOSITE COATINGS FAN Yun-ying(1)，ZHANG Ying-jie(1)，YANG Xian-wan(1)，CHEN Zhen(1)，ZHANG Jiang-hong(1)，TU Zhe-mi(2) 1Kunming University of Science and Technology; 2Harbin Institute of Technology Zn-Fe-SiO2 composite coatings were produced by electrodeposition.The corrosion resistance of Zn,Zn-Fe and Zn-Fe-SiO2 coatings was compared,and the influence of compositions of Zn-Fe-SiO2 coatings on its corrosion resistance was studied.The results showed that Zn-Fe-SiO2 composite coatings had high corrosion resistance even without a post passivation treatment.The corrosion resistance of Zn-Fe-SiO2 coatings in acid solution could be improved by increasing the content of iron,and it could be improved by increasing the content of SiO2 while in neutral solution. electrodeposition; composite coatings; corrosion resistance
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