A general model for the repassivation potential as a function of multiple aqueous solution species

被引：91

作者：

Anderko, A

Sridhar, N

Dunn, DS

机构：

[1] OLI Syst Inc, Morris Plains, NJ 07950 USA

[2] SW Res Inst, San Antonio, TX 78238 USA

来源：

CORROSION SCIENCE | 2004年 / 46卷 / 07期

关键词：

stainless steels; modeling studies; potentiostatic; crevice corrosion; and pitting corrosion;

D O I：

10.1016/j.corsci.2003.10.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A general model for predicting the localized corrosion repassivation potential of alloys in multicomponent electrolyte solutions is described. The model assumes that the status of localized corrosion is determined by competitive processes at the metal-salt film-solution interfaces leading to either metal salt or oxide formation. The model successfully predicts the observed effects of aggressive species, such as chloride and bromide, inhibiting species, such as nitrate, and non-aggressive species, such as acetate, for a number of Fe-Ni-Cr-Mo alloys. Furthermore, the model accurately predicts the effect of nitrate in a three-component system of chloride + nitrate + acetate, based only on parameters regressed for the constituent binary systems. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1583 / 1612

页数：30

共 39 条

[1] Computation of rates of general corrosion using electrochemical and thermodynamic models [J].