FEM simulation of corrosion under macro-cell mechanism

被引：8

作者：

Attarchi, Mehdi ^{[1
]}

Brenna, Andrea ^{[1
]}

Ormellese, Marco ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, Via Luigi Mancinelli 7, I-20131 Milan, Italy

来源：

CORROSION SCIENCE | 2021年 / 179卷

关键词：

Macro-cell; Throwing power; Stainless steel; FEM simulation; Active passive; Carbon steel; GALVANIC CORROSION; CATHODIC PROTECTION; CURRENT DISTRIBUTIONS; ENVIRONMENT; PREDICTION; THICKNESS; EQUATION; SYSTEMS;

D O I：

10.1016/j.corsci.2020.109116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, FEM simulations have been carried out to have an accurate estimation of the electrical field in the presence of a macro-cell process, taking into account primary and secondary current distribution to update present throwing power equations. The electrochemical boundary conditions were defined comprehensively, and simulations have been performed changing water resistivity, geometry, and oxygen content. The studied systems are galvanic coupling between a stainless steel-carbon steel and also a carbon steel-zinc. As a result, an equation was proposed to predict the surfaces involved in the coupling to have an estimation of the corrosion rate.

引用

页数：9

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