Crevice corrosion behaviour of superaustenitic stainless steels: Dynamic electrochemical impedance spectroscopy and atomic force microscopy studies
Crevice corrosion behaviour of superaustenitic stainless steels: Dynamic electrochemical impedance spectroscopy and atomic force microscopy studies
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DOI：
10.1016/j.corsci.2008.11.008
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发表时间：
2009-02-01
影响因子：
8.3
通讯作者：
Rajendran, N.
中科院分区：
文献类型：
--
作者：
Nagarajan, S.;Rajendran, N.
采用动电位阳极极化法和动态电化学阻抗谱（DEIS）法研究了316L不锈钢、33合金和24合金在天然海水中的缝隙腐蚀性能。从开路电位到溶解电位进行DEIS测量。结果表明，在动电位条件下的阻抗测量允许同时研究或改变钝化层结构。讨论了不同电位区的阻抗谱。利用光学显微镜和原子力显微镜（AFM）研究了缝隙腐蚀后合金的表面形貌。(C)2008爱思唯尔有限公司保留所有权利。
Potentiodynamic anodic polarisation and dynamic electrochemical impedance spectroscopic (DEIS) measurements were carried out for 316L SS, alloy 33 and alloy 24 in natural sea water in order to assess their crevice corrosion resistance. DEIS measurements were performed from open circuit potential to dissolution potential. it was shown that the impedance measurements in potentiodynamic conditions allow simultaneous investigation or changes in passive layer structure. The impedance spectra or various potential regions were also discussed. The surface morphology of the alloys after crevice corrosion studies were studied using optical microscope and atomic force microscopy (AFM). (C) 2008 Elsevier Ltd. All rights reserved.