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INFLUENCE OF ADDITIONS OF Al2O3 POWDERS IN ELECTROLYTICAL SOLUTION ON MICROSTRUCTURE AND CORROSION PROTECTION OF CERAMIC COATINGS FORMED ON MAGNESIUM ALLOY DURING MICRO-ARC OXIDATION |
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太原理工大学;表面工程研究所 |
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Abstract AZ91D magnesium alloy was treated by micro-arc oxidation (MAO) in the optimized composite solution of silicate-phosphate system in which Al2O3 powders were added.Morphological characteristic and phase constituent of ceramic coatings were analyzed using the scanning electron microscope (SEM) and the x-ray diffraction (XRD).The results showed that after adding Al2O3 powders pores in ceramic coatings decreased and the loose layer became more compact,new phase of Al2O3 appeared.Electrochemical corrosion experiments in 3.5%NaCl solution showed that corrosion resistance of ceramic coatings after adding Al2O3 powders was also improved greatly.
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Received: 10 January 2006
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[1]Chen Z H,Yan H G,Chen J H,et al.Magnesium Alloy[M].Bei-jing:Chemical Industry Press,2004(陈振华,严红革,陈吉华等.镁合金[M].北京:化学工业出版社,2004) [2]Xue W B,Deng Z W,Lai Y C,et al.Microphase and forming ofceramic coatings by micro-arc oxidation on LY12[J].Chin.J.Mater.Res.,1997,11(2):169-169(薛文斌,邓志威,来永春等.LY12铝合金微弧氧化陶瓷膜相分布及形成[J].材料研究学报,1997,11(2):169-169) [3]Xue W B,Lai Y C,Deng Z W,et al.The properties of coating formed by micro-plasma oxidation on magnesium alloy[J].Mater.Sci.Technol.,1997,5(2):89-92(薛文斌,来永春,邓志威等.镁合金微等离子体氧化膜的特性[J].材料科学与工艺,1997,5(2):89-92) [4]Jiang B L,Wu G J,Zhang S F,et al.Research on micro-mecha-nism and growth procedure of ceramic coating formed by micro-arc oxidation on magnesium alloys[J].Transaction of Materials andHeat Treatment,2002,23(1):5-8(蒋百灵,吴国建,张淑芬等.镁合金微弧氧化陶瓷层生长过程及微观结构的研究[J].材料热处理学报,2002,23(1):5-8) [5]Wei Z L,Chen Q R,Guo X C,et al.Microstructure and corrosion resistance of ceramic coating on magnesium alloy[J].Mater.Prot.,2003,36(10):21-23(卫中领,陈秋荣,郭歆聪等.镁合金微弧氧化膜的微观结构及耐蚀性研究[J].材料保护,2003,36(10):21-23) [6]Liu Y H.Electrochemical Test Technology[M].Beijing:Bei-jing Aeronautical Academic Press,1986(刘永辉.电化学测试技术[M].北京:北京航空学院出版社,1986) |
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