| 加压幅度对AZ91D镁合金微弧氧化膜的影响 |
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| 引用本文： | 吕维玲,马 颖,陈体军,徐卫军,杨 健,郝 远. 加压幅度对AZ91D镁合金微弧氧化膜的影响[J]. 稀有金属材料与工程, 2009, 38(8): 1480-1483 |
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| 作者姓名： | 吕维玲 马 颖 陈体军 徐卫军 杨 健 郝 远 |
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| 作者单位： | 兰州理工大学,甘肃省有色金属新材料省部共建国家重点实验室,甘肃,兰州,730050 |
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| 基金项目： | 国家"973"计划项目，甘肃省科技重大专项项目，省际国际科技合作计划项目，教育部春晖计划项目 |
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| 摘 要： | 研究了硅酸盐体系中加压幅度对AZ91D镁合金微弧氧化膜层结构及耐磨、耐蚀性能的影响.结果表明:随着加压幅度的增大,微弧氧化膜层的厚度、孔隙度和结合力都呈先增大后减小的趋势,且都在加压幅度为20 V时出现了最大值;粗糙度随着加压幅度的增大而增大.当加压幅度不小于25 V时微弧氧化膜层耐蚀能力强.
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| 关 键 词： | AZ91D镁合金 微弧氧化 加压幅度 微观结构 耐蚀性 |
| 收稿时间： | 2008-07-21 |
| 修稿时间： | 2009-06-08 |
Effects of Increase Extent of Voltage on Micro-Arc Oxidation Coatings of AZ91D Magnesium Alloy |
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| Lü Weiling,Ma Ying,Chen Tijun,Xu Weijun,Yang Jian,Hao Yuan. Effects of Increase Extent of Voltage on Micro-Arc Oxidation Coatings of AZ91D Magnesium Alloy[J]. Rare Metal Materials and Engineering, 2009, 38(8): 1480-1483 |
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| Authors: | Lü Weiling Ma Ying Chen Tijun Xu Weijun Yang Jian Hao Yuan |
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| Affiliation: | State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | The effects of increase extent of voltage on microstructures and corrosion resistance of micro-arc oxidation (MAO) coatings for AZ91D magnesium alloy in silicate electrolyte were investigated. The results showed that with increase of the voltage increase extent, all of the thickness, porosity and bonding force of MAO coating first increased, and then decreased. These parameters were all up to their maximum values when the voltage increase extent was 20 V. However, the roughness of the coatings was always increased with the increasing of voltage increase extent. The coating had the optimum corrosion resistance when voltage increase extent was not below 25V. |
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| Keywords: | AZ91D magnesium alloy micro-arc oxidation increase extent of voltage microstructure corrosion resistance |
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