| 双辉等离子渗Ta改性层的组织及耐蚀性 |
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| 引用本文： | 毕强,张平则,黄俊,魏东博,李伟.双辉等离子渗Ta改性层的组织及耐蚀性[J].中国腐蚀与防护学报,2012,32(5):364-368. |
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| 作者姓名： | 毕强 张平则 黄俊 魏东博 李伟 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院 南京 211106 |
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| 基金项目： | 江苏省科技成果转化专项资金项目(BA2007036)资助 |
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| 摘 要： | 用双辉等离子表面冶金技术在Q235钢表面制备Ta改性层。用XRD，SEM，EDS， 电化学腐蚀和中性盐雾试验分析Ta改性层的组织特征、成分和耐蚀性能。结果表明，Ta改性层与基体结合良好，厚度为32 μm左右。改性层中Ta元素含量呈梯度分布，主要物相为α-Ta。双辉等离子表面渗Ta处理后试样的耐蚀性明显优于基材。
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| 关 键 词： | 双辉等离子表面冶金 Ta改性层 极化曲线 电化学阻抗 中性盐雾试验 抗腐蚀性 |
| 收稿时间： | 2011-08-29 |
MICROSTRUCTURE AND CORROSION RESISTANCE OF Ta MODIFIED LAYER FORMED BY DOUBLE GLOW PLASMA SURFACE METALLURGY |
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| BI Qiang,ZHANG Pingze,HUANG Jun,WEI Dongbo,LI Wei.MICROSTRUCTURE AND CORROSION RESISTANCE OF Ta MODIFIED LAYER FORMED BY DOUBLE GLOW PLASMA SURFACE METALLURGY[J].Journal of Chinese Society For Corrosion and Protection,2012,32(5):364-368. |
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| Authors: | BI Qiang ZHANG Pingze HUANG Jun WEI Dongbo LI Wei |
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| Affiliation: | College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics, Nanjing 211106 |
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| Abstract: | Ta modified layer was obtained on Q235 steel by double glow plasma surface metallurgy and its microstructure, composition and corrosion resistance were investigated by XRD, SEM, EDS, polarization curve, electrochemical impedance spectroscopy(EIS) and neutral salt spray test(NSS). The results indicated that the Ta modified layer adhered strongly to substrate and its thickness was about 32μm. Ta element distributed gradiently from the surface to substrate and the modified layer was mainly consisted ofα-Ta phase. The results of polarization curves, electrochemical impedance spectroscopy and neutral salt spray test revealed that the Ta modified layer exhibited better corrosion resistance than Q235 steel. |
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| Keywords: | double glow plasma surface metallurgy Ta modified layer polarization curve electrochemical impedance spectroscopy neutral salt spray test corrosion resistance |
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