Institutional Repository of Coll Mat Sci & Engn
Compactness of micro-arc oxidation coatings on AZ91D magnesium alloys and its effect on coating corrosion resistance | |
Dong, Hai-Rong; Ma, Ying; Guo, Hui-Xia; Zhang, Yu-Fu; Hao, Yuan | |
2015-04-01 | |
发表期刊 | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
ISSN | 10040609 |
卷号 | 25期号:4页码:844-851 |
摘要 | The coatings on AZ91D magnesium alloys were prepared by micro-arc oxidation (MAO) in silicate-containing electrolyte. The method to research the compactness of the coatings was discussed and a calculation formula of the density of the coatings was deduced. Meanwhile, the size and amount of the micro pores on the surface and the surface porosity of the coatings treated for different times were analyzed quantitatively. And the effect of the above factors on the corrosion resistance of the coatings was researched. The results show that, the phase composition of the coatings has no change with the extension of treatment time, so, the compactness of the coatings can be researched indirectly through the density of the coatings. With prolonging treatment time, the micro pores on the surface of the coatings become bigger constantly. The differences in size and shape of the micro pores also become more serious. The surface porosities of the coatings gradually increase from 8% to 15%. After treating for 5 and 10 min, the compactness of the coatings is large, however, after treating for 20 min, the compactness decreases greatly and basically remains unchanged. The corrosion resistance of the sample treated for 30 min is the best, because the coatings has a larger thickness, higher compactness and less surface defects on the surface. ©, 2015, Central South University of Technology. All right reserved. |
关键词 | Corrosion resistance Electrolytes Magnesium alloys Oxidation Porosity Silicates Surface defects AZ91D magnesium alloys Calculation formula Compactness Micro-arc oxidation coatings Microarc oxidation Micropores Size and shape Surface porosity |
收录类别 | EI |
语种 | 中文 |
出版者 | Central South University of Technology |
EI入藏号 | 20152100862883 |
EI主题词 | Corrosion resistant coatings |
EI分类号 | 539.1 Metals Corrosion - 542.2 Magnesium and Alloys - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science |
来源库 | Compendex |
分类代码 | 539.1 Metals Corrosion - 542.2 Magnesium and Alloys - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/112344 |
专题 | 材料科学与工程学院 |
作者单位 | State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China |
第一作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Dong, Hai-Rong,Ma, Ying,Guo, Hui-Xia,et al. Compactness of micro-arc oxidation coatings on AZ91D magnesium alloys and its effect on coating corrosion resistance[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2015,25(4):844-851. |
APA | Dong, Hai-Rong,Ma, Ying,Guo, Hui-Xia,Zhang, Yu-Fu,&Hao, Yuan.(2015).Compactness of micro-arc oxidation coatings on AZ91D magnesium alloys and its effect on coating corrosion resistance.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,25(4),844-851. |
MLA | Dong, Hai-Rong,et al."Compactness of micro-arc oxidation coatings on AZ91D magnesium alloys and its effect on coating corrosion resistance".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 25.4(2015):844-851. |
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