A quantitative phase-field model for crevice corrosion

被引：11

作者：

Xiao, Z. H. ^{[1
]}

Hu, S. Y. ^{[2
]}

Luo, J. L. ^{[3
]}

Shi, S. Q. ^{[1
]}

Henager, C. H., Jr. ^{[2
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

[2] Pacific Northwest Natl Lab, Richland, WA USA

[3] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB, Canada

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2018年 / 149卷

基金：

中国国家自然科学基金;

关键词：

Phase-field modeling; Crevice corrosion; Iron; Electrochemical simulation; PITTING CORROSION; LOCALIZED CORROSION; MATHEMATICAL-MODEL; GALVANIC CORROSION; FINITE-ELEMENT; ELECTROCHEMISTRY; SIMULATION; TRANSPORT; TEMPERATURE; PROPAGATION;

D O I：

10.1016/j.commatsci.2018.03.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A quantitative phase-field model is developed for the investigation of crevice corrosion of iron in salt water. Six types of ionic species and some associated chemical reactions have been considered. In addition to the transient distributions of ion concentrations and electric potential in the electrolyte, some physical and chemical properties related to corrosion, such as overpotential, pH value and corrosion rate, under different metal potentials are studied. Benchmarking of the phase-field model against a sharp interface model is conducted. The corrosion rates predicted by the models are in the same order of magnitudes with experimental results.

引用

页码：37 / 48

页数：12

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