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Product/metal ratio (PMR):A novel criterion for the evaluation of electrolytes on micro-arc oxidation (MAO) of Mg and its alloys

查看全文 作　　者：SONG [1,2,3]LaiWen;SONG [1]YingWei;SHAN [1]DaYong;ZHU [2]GuoYi;HAN [1]EnHou 高影响力作者 机构地区：[1]State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;[2]State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;[3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China高影响力机构 出　　处：《Science China(Technological Sciences)》索引2011年第54卷第10期,共7页高影响力期刊 基　　金：supported by the National Key Technology R&D Program (Grant No. 2011BAE22B05);the National Natural Science Foundation of China (Grant No. 50901082) 摘　　要：Product/metal ratio (PMR) was introduced as a novel criterion for the evaluation of electrolytes on micro-arc oxidation (MAO) of Mg and its alloys. The criterion initially sprang from Pilling-Bedworth ratio (PBR), focused on the roles of electrolytes for the compactness of the fabricated coatings, and took attention on properties of reactants/products during MAO. Meanwhile, based on our experiments as well as the results from literatures, the effects of electrolyte additives on morphologies and com-positions of the fabricated MAO coatings of Mg alloys were exploited for verification and supplement of the initial criterion. In combination of the initial PMR criterion and experimental verification, PMR could be represented by special mode (PMRs=Voxide products/Valloy substrates) and general mode (PMRg= PMRs+ PMRd). The ideal PMRs should be between 1 and 2, while PMRd is related to the coating deposition during MAO. PMRd is a supplement to PMRs when the effect of the overlaying prop-erty (O) of the coatings and the effective deposition (D) of electrolyte composites are considered (PMRd=f(O, D). O is related to the melting point (MP) and boiling point (BP) of the MAO products. D is related to the effective reactions between alloy substrates and electrolytes during MAO. 关 键 词：PMRS 评价标准 产品介绍 合金涂层 微弧氧化 电解质 MAO 金属
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