| 镁合金微弧氧化陶瓷膜的组织结构及耐腐蚀性能 |
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| 引用本文： | 夏琦兴,姚忠平,张亚军,李梁梁,姜兆华. 镁合金微弧氧化陶瓷膜的组织结构及耐腐蚀性能[J]. 材料保护, 2011, 44(5) |
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| 作者姓名： | 夏琦兴 姚忠平 张亚军 李梁梁 姜兆华 |
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| 作者单位： | 哈尔滨工业大学化工学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 中国博士后基金面上项目二等资助(200904500963) |
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| 摘 要： | 为了提高镁合金的耐蚀性,采用氢氧化钠-六偏磷酸钠-醋酸钙电解液,利用微弧氧化技术在AZ91D镁合金表面原位生长含有钙、磷的陶瓷膜,研究了醋酸钙浓度对陶瓷膜的厚度、表面粗糙度、形貌、成分、相组成及其在模拟体液中耐蚀性的影响。结果表明:陶瓷膜主要为MgO相,且含有Ca和P;膜层表面具有多孔结构;增加电解液中醋酸钙浓度,膜层变厚,粗糙度先增大后减小,Ca含量增多;陶瓷膜使镁合金的耐蚀性提高;电解液加入醋酸钙后,制得的膜层耐蚀性下降,含0.4 g/L醋酸钙的电解液制得的膜层的耐蚀性在含Ca膜层中最好。
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| 关 键 词： | 微弧氧化 陶瓷膜 AZ91D镁合金 耐腐蚀性能 醋酸钙 |
Microstructure and Corrosion Resistance of Micro-Arc Oxidation Ceramic Coating on Magnesium Alloy |
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| XIA Qi-xing,YAO Zhong-ping,ZHANG Ya-jun,LI Liang-liang,JIANG Zhao-hua. Microstructure and Corrosion Resistance of Micro-Arc Oxidation Ceramic Coating on Magnesium Alloy[J]. Journal of Materials Protection, 2011, 44(5) |
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| Authors: | XIA Qi-xing YAO Zhong-ping ZHANG Ya-jun LI Liang-liang JIANG Zhao-hua |
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| Affiliation: | XIA Qi-xing,YAO Zhong-ping,ZHANG Ya-jun,LI Liang-liang,JIANG Zhao-hua(School of Chemical Engineering and Technology,Harbin Institute of Technology,Harbin 150001,China). |
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| Abstract: | Ceramic coating containing Ca and P was prepared on the surface of AZ91D magnesium alloy by micro-arc oxidation in electrolyte of sodium hydroxide-sodium hexametaphosphate-calcium acetate.The effect of the concentration of calcium acetate on the thickness,surface roughness,morphology,composition,phase structure and corrosion resistance in simulated body fluid of the ceramic coating was investigated.Results show that as-prepared ceramic coating with a porous microstructure mainly consists of MgO and contains... |
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| Keywords: | micro-arc oxidation ceramic coating AZ91D magnesium alloy corrosion resistance calcium acetate |
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