| Fabrication and characterization of micro-arc oxidation (MAO) coatings on Mg-Li alloy in alkaline polyphosphate electrolytes without and with the addition of K2TiF6 |
| L. Song; Y. Kou; Y. Song; D. Shan; G. Zhu; E. H. Han
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| 2011
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| 发表期刊 | Materials and Corrosion-Werkstoffe Und Korrosion
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| ISSN | 0947-5117
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| 卷号 | 62期号:12页码:1124-1132 |
| 摘要 | Micro-arc oxidation (MAO) has been accomplished on Mg-Li alloy in alkaline polyphosphate electrolytes without and with the addition of 10?g/L?K2TiF6. The surface/cross-section microstructures of the fabricated coatings were analyzed by scanning electron microscope (SEM); the compositions of the fabricated MAO coatings were analyzed by X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDAX); the corrosion behaviors of bare and MAO coated Mg-Li alloys were evaluated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) in 3.5?wt% NaCl solution. Novel hybrid MAO coatings which showed hybrid composition of MgF2/Ti2O5/Ti6O11/MgO, as well as hybrid structure of a dense inner layer, a dense outer layer and an intermediate layer with some sealed/semi-sealed pores, had been fabricated on Mg-Li alloy in alkaline polyphosphate electrolytes with the addition of K2TiF6. Meanwhile, the corrosion resistance of the fabricated MAO coatings was improved obviously as the result of the addition of K2TiF6 in the electrolytes. Moreover, the multiple roles of ${\rm TiF}_{{\rm 6}}boolean AND{{\rm 2}{-} } $ on the MAO process accounted for the fabrication of the corrosion-resistant hybrid MAO coatings. |
| 部门归属 | [song, l.; song, y.; shan, d.; han, e. -h.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [song, l.; kou, y.; zhu, g.] chinese acad sci, changchun inst appl chem, state key lab electroanalyt chem, changchun 130022, peoples r china.;shan, d (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;dyshan@imr.ac.cn
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| 关键词 | Corrosion Resistance
Mg-li Alloy
Micro-arc Oxidation
Az91d Magnesium Alloy
Corrosion-resistance
Phosphate Electrolytes
Ceramic Coatings
Zn Alloy
Silicate
Performance
Aluminum
Behavior
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| URL | 查看原文
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| WOS记录号 | WOS:000298064000006
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30667
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
L. Song,Y. Kou,Y. Song,et al. Fabrication and characterization of micro-arc oxidation (MAO) coatings on Mg-Li alloy in alkaline polyphosphate electrolytes without and with the addition of K2TiF6[J]. Materials and Corrosion-Werkstoffe Und Korrosion,2011,62(12):1124-1132.
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| APA |
L. Song,Y. Kou,Y. Song,D. Shan,G. Zhu,&E. H. Han.(2011).Fabrication and characterization of micro-arc oxidation (MAO) coatings on Mg-Li alloy in alkaline polyphosphate electrolytes without and with the addition of K2TiF6.Materials and Corrosion-Werkstoffe Und Korrosion,62(12),1124-1132.
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| MLA |
L. Song,et al."Fabrication and characterization of micro-arc oxidation (MAO) coatings on Mg-Li alloy in alkaline polyphosphate electrolytes without and with the addition of K2TiF6".Materials and Corrosion-Werkstoffe Und Korrosion 62.12(2011):1124-1132.
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