| 纯镁和AZ91HP镁合金微弧氧化膜性能比较 |
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| 引用本文： | 张荣发,黄隆,胡长员,柯科,巢强花,王为.纯镁和AZ91HP镁合金微弧氧化膜性能比较[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 张荣发 黄隆 胡长员 柯科 巢强花 王为 |
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| 作者单位： | 江西科技师范学院,江西,南昌,330013 |
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| 基金项目： | 江西省教育厅资助科研项目 |
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| 摘 要： | 在环保型电解液中,采用电压-时间曲线、等离子体发射光谱仪(ICP)、扫描电镜(SEM)等方法研究了纯镁和AZ91HP两种基体材料对氧化过程、氧化膜表面形貌及成分的影响.根据电压-时间曲线,在氧化时间分别为1 min和5 min时,AZ91HP镁合金的电流效率比纯镁低,可能是由AZ91HP中的合金元素铝氧化并进入氧化膜中导致裂缝增加,成为析氧中心所导致的.在AZ91HP镁合金上生成的氧化膜孔的均匀性没有纯镁好,并且最大孔的直径比在纯镁上的氧化膜大.EDS分析表明,随着氧化时间延长,氧化膜中Si和P含量增加;而在氧化时间相同的情况下,两种基体上形成的氧化膜成分没有明显区别.ICP方法没有检测到氧化溶液中含有Mg~(2+)和Al~(3+),表明这两种离子在溶液中的浓度很低.
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| 关 键 词： | 镁合金 微弧氧化 基体 性能 |
Comparison of Coating Properties of Pure Magnesium and AZ91HP Magnesium Alloys by Micro Arc Oxidation |
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| Zhang Rongfa,Huang Long,Hu Changyuan,Ke Ke,Chao Qianghua,Wang Wei.Comparison of Coating Properties of Pure Magnesium and AZ91HP Magnesium Alloys by Micro Arc Oxidation[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Zhang Rongfa Huang Long Hu Changyuan Ke Ke Chao Qianghua Wang Wei |
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| Affiliation: | Zhang Rongfa,Huang Long,Hu Changyuan,Ke Ke,Chao Qianghua,Wang Wei (Jiangxi Science , Technology Normal University,Nanchang 330013,China) |
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| Abstract: | In an environmentally friendly electrolyte,the effects of pure magnesium and AZ91HP substrate on anodizing process,surface morphologies and chemical compositions of anodic coatings were investigated by voltage-time curves,ICP and SEM. According to voltage-time curves,the current efficiency on AZ91HP was lower than that on pure magnesium for both 1 min and 5 min. The reason may be that the alloying element aluminium was anodized,subsequently entered into anodic coatings and therefore increased coating crack ... |
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| Keywords: | magnesium alloys micro arc oxidation substrate property |
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