| 丙三醇对镁合金微弧氧化过程及膜层的影响 |
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| 引用本文： | 乌迪,刘向东,吕凯,张雅萍,王晓军.丙三醇对镁合金微弧氧化过程及膜层的影响[J].材料保护,2009,42(2). |
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| 作者姓名： | 乌迪 刘向东 吕凯 张雅萍 王晓军 |
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| 作者单位： | 内蒙古工业大学材料科学与工程学院,内蒙古,呼和浩特,010051 |
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| 基金项目： | 内蒙古自治区自然科学基金 |
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| 摘 要： | 镁合金微弧氧化膜的厚度与电解液的浓度成正比关系,但电解液太浓,氧化膜层将会出现许多问题,最终影响使用.在硅酸盐电解液中添加丙三醇溶液,研究了其对镁合金AZ91D微弧氧化过程及所获膜层的厚度、表面形貌与相组成的影响.结果表明:电解液中加入丙三醇能够有效地抑制尖端剧烈放电现象,稳定微弧氧化过程,改善膜层性能;随着丙三醇含量的增加,氧化膜层厚度逐渐降低;添加丙三醇能使氧化膜层表面孔洞变小,微裂纹数量减少,膜层外观质量得到极大的改善;丙三醇对陶瓷层相组成无明显影响,但MgO含量增加,Mg2SiO4的含量则有所降低.
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| 关 键 词： | 微弧氧化 镁合金 丙三醇 陶瓷膜层 尖端放电 |
Influence of Glycerol on Micro-Arc Oxidation Process and Properties of the Ceramic Coatings on AZ91D Magnesium Alloy |
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| WU Di,LIU Xiang-dong,LU Kai,ZHANG Ya-ping,WANG Xiao-jun.Influence of Glycerol on Micro-Arc Oxidation Process and Properties of the Ceramic Coatings on AZ91D Magnesium Alloy[J].Journal of Materials Protection,2009,42(2). |
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| Authors: | WU Di LIU Xiang-dong LU Kai ZHANG Ya-ping WANG Xiao-jun |
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| Affiliation: | WU Di,LIU Xiang-dong,LU Kai,ZHANG Ya-ping,WANG Xiao-jun(School of Materials Science , Engineering,Inner Mongolia University of Technology,Huhehaote 010051,Inner Mongolia,China) |
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| Abstract: | Ceramic coatings were fabricated on AZ91D Mg-alloy substrate from the electrolyte of Na2SiO3 with and without glycerol addition using micro-arc oxidation technique.The effects of glycerol on the micro-arc oxidation process and the microstructure and prop-erties of the ceramic coalings were studied,based on analyses of the thickness and morphology and phase compositions of the ce-ramic coalings by means of scanning electron microscopy and X-ray diffraction.Results showed that the destructive marginal dsi-cha... |
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| Keywords: | micro-arc oxidation magnesium alloy glycerol ceramic coatings marginal discharge |
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