| 反应等离子喷涂TiN涂层电化学腐蚀行为 |
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| 引用本文： | 李莎,阎殿然,董艳春,王师,高国旗,张志彬.反应等离子喷涂TiN涂层电化学腐蚀行为[J].北京科技大学学报,2009,31(9). |
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| 作者姓名： | 李莎 阎殿然 董艳春 王师 高国旗 张志彬 |
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| 作者单位： | 河北工业大学材料科学与工程学院,天津,300130 |
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| 摘 要： | 利用电化学阻抗谱等电化学方法及扫描电镜(SEM)技术,研究了反应等离子喷涂TiN涂层在模拟海水中的电化学腐蚀行为. 研究结果表明:TiN涂层的自腐蚀电位高于基体,涂层对基体能起到良好的腐蚀屏蔽作用;腐蚀介质通过涂层的通孔、微裂纹等缺陷渗入涂层与基体的界面腐蚀基体,从而使涂层电阻下降、电容增加,所产生的腐蚀产物在一定程度上可以抑制腐蚀反应的进行,但不会阻止基体局部腐蚀的继续进行. 涂层的孔隙是造成涂层电化学腐蚀的主要原因.
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| 关 键 词： | 等离子喷涂 TiN涂层 电化学腐蚀 阻抗谱 |
Electrochemical corrosion behavior of reactive plasma-sprayed TiN coatings |
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| LI Sha,YAN Dian-ran,DONG Yan-chun,WANG Shi,GAO Guo-qi,ZHANG Zhi-bin School of Material Science , Engineering,Hebei University of Technology,Tianjin ,China.Electrochemical corrosion behavior of reactive plasma-sprayed TiN coatings[J].Journal of University of Science and Technology Beijing,2009,31(9). |
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| Authors: | LI Sha YAN Dian-ran DONG Yan-chun WANG Shi GAO Guo-qi ZHANG Zhi-bin School of Material Science Engineering Hebei University of Technology Tianjin China |
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| Institution: | LI Sha,YAN Dian-ran,DONG Yan-chun,WANG Shi,GAO Guo-qi,ZHANG Zhi-bin School of Material Science , Engineering,Hebei University of Technology,Tianjin 300130,China |
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| Abstract: | The electrochemical corrosion behavior of TiN coatings prepared by reactive plasma spraying was studied in seawater by SEM technology and electrochemical methods such as electrochemical impedance spectroscopy.The results showed that the corrosion potential of TiN coatings was higher than that of the substrate and the coatings had a good corrosion shielding effect on the substrate.The coatings' resistance declined and capacitance increased because the corrosion medium permeated into the coating/metal interfa... |
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| Keywords: | plasma spraying TiN coatings electrochemical corrosion impedance spectroscopy |
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