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腐蚀科学与防护技术 2004
CORROSION RESISTANCE OF ELECTRODEPOSITED Zn- Fe- SiO2 COMPOSITE COATINGS
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Abstract:
Zn-Fe-SiO_2 composite coatings were produced by electrodeposition.The corrosion resistance of Zn,Zn-Fe and Zn-Fe-SiO_2 coatings was compared,and the influence of compositions of Zn-Fe-SiO_2 coatings on its corrosion resistance was studied.The results showed that Zn-Fe-SiO_2 composite coatings had high corrosion resistance even without a post passivation treatment.The corrosion resistance of Zn-Fe-SiO_2 coatings in acid solution could be improved by increasing the content of iron,and it could be improved by increasing the content of SiO_2 while in neutral solution.