A study on the stability of AISI 316L stainless steel pitting corrosion through its transfer function

被引：91

作者：

Bastidas, JM ^{[1
]}

Polo, JL ^{[1
]}

Torres, CL ^{[1
]}

Cano, E ^{[1
]}

机构：

[1] CSIC, Natl Ctr Met Res, Madrid 28040, Spain

来源：

CORROSION SCIENCE | 2001年 / 43卷 / 02期

关键词：

stainless steer; impedance data; deconvolution; transfer function; Kramers-Kronig; pitting corrosion; stability analysis;

D O I：

10.1016/S0010-938X(00)00082-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Impedance measurements were made on an electrochemically polarized AISI 316L stainless steel in a 5% NaCl solution at room temperature. Limited information about this electrochemical method is available in the literature. Three polarization sweep rates, 0.10, 0.30 and 0.40 mV s(-1) were tested. Nyquist plots at the pitting potential regions show three capacitive loops. A deconvolution method combined with a complex non-linear least squares program was used to determine the individual components of the equivalent circuit and transfer functions. Negative capacitance and resistances were obtained. The impedance data do not satisfy Kramers-Kronig transforms. It is clear that stability conditions are not met for electrode processes indicating surface relaxation. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：269 / 281

页数：13

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