| 在优化Na2SiO3电解液制备的镁合金陶瓷膜的防护性能 |
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| 引用本文： | 张慧霞,张伟,李月洁,杜克勤,严川伟.在优化Na2SiO3电解液制备的镁合金陶瓷膜的防护性能[J].腐蚀科学与防护技术,2008,20(4):268-271. |
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| 作者姓名： | 张慧霞 张伟 李月洁 杜克勤 严川伟 |
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| 作者单位： | 1. 中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳,110016
2. 海军装备部驻沈阳地区军事代表局,沈阳,110031 |
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| 摘 要： | 优化镁合金微弧氧化常用的Na2SiO3电解液并制备了白色陶瓷质微弧氧化膜，采用动电位极化曲线和电化学交流阻抗(EIS)等方法研究其防护性能.结果表明，与常用的Na2SiO3电解液制备的试样相比，优化的Na2SiO3电解液所制备试样的自腐蚀电流降低了3个数量级，并表现出较高的阻抗值；在3.5% NaCl溶液中浸泡发生点蚀的时间从24 h延长到240 h.SEM和XRD分析结果表明，在优化的Na2SiO3电解液中制备的AZ91D的陶瓷膜层孔隙减少，孔径也较小，且增加了低溶解度的Mg5F2(SiO4)2相和起钝化作用的MgAl2O4相.
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| 关 键 词： | 镁合金 微弧氧化 防护性能 Na2SiO3电解液 |
| 收稿时间： | 2007-03-19 |
| 修稿时间： | 2007-04-28 |
CORROSION PERFORMANCE OF CERAMIC FILMS FABRICATED ON AZ91D MAGNESIUM ALLOY BY PLASMA ELETROLYTIC OXIDATION IN AN OPTIMIZED Na_2SiO_3 CONTAINING SOLUTION |
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| ZHANG Hui-xia,ZHANG Wei,LI Yue-jie,DU Ke-qin,YAN Chuan-wei.CORROSION PERFORMANCE OF CERAMIC FILMS FABRICATED ON AZ91D MAGNESIUM ALLOY BY PLASMA ELETROLYTIC OXIDATION IN AN OPTIMIZED Na_2SiO_3 CONTAINING SOLUTION[J].Corrosion Science and Protection Technology,2008,20(4):268-271. |
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| Authors: | ZHANG Hui-xia ZHANG Wei LI Yue-jie DU Ke-qin YAN Chuan-wei |
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| Affiliation: | ZHANG Hui-xia1,ZHANG Wei1,LI Yue-jie2,DU Ke-qin2,YAN Chuan-wei1 1.State Key Lab.for Corrosion , Protection,Institute of Metal Rearch,Chinese Academy of Sciences,Shenyang 110016,2.Military Representative Bureau,Department of Equipment of Naval to Shenyang Military Region,Shenyang 110031,3.College of Environmental Science , Engineering,Dalian Jiaotong University,Dalian 116028 |
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| Abstract: | Plasma electrolytic oxidation of AZ91D magnesium alloy was studied in an optimized solution mainly containing Na2SiO3.The microstructure,phase constituents and elemental distribution of ceramic films were investigated by using scanning electron microscopy(SEM) and X-ray diffraction(XRD).The corrosion resistance of the magnesium alloy with ceramic films were evaluated by potentiodynamic polarization curves and electrochemical impedance spectroscopy(EIS).The results indicated that Icorr of the magnesium alloy... |
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| Keywords: | magnesium alloy plasma electrolytic oxidation corrosion resistance Na2SiO3 solution |
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