Potential and current distributions of one-dimensional galvanic corrosion systems

被引：94

作者：

Song, Guang-Ling ^{[1
]}

机构：

[1] GM Corp, Ctr Res & Dev, Chem Sci & Mat Syst Lab, Warren, MI 48090 USA

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 02期

关键词：

Galvanic corrosion; Modeling; Linear system; One dimension; COPLANAR ELECTRODES; STEEL; PROTECTION; ETHANOL; COUPLE; CELLS; AZ91D;

D O I：

10.1016/j.corsci.2009.10.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Many practical galvanic corrosion problems can be simplified into a one-dimensional mathematical equation. In this study, theoretical expressions for galvanic potentials and currents of one-dimensional systems are deduced and some critical parameters involved in the potential and current equations are systematically discussed. The developed analytical approach is then applied to some practical galvanic corrosion cases, such as a steel-Al joint exposed to bio-fuel E85, a galvanic couple separated by a passive spacer and a scratched organic coating. It is demonstrated that the analytical approach can examine the reliability of a computer modeled galvanic corrosion process and help understand the mechanism behind the computer modeled galvanic corrosion behavior. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：455 / 480

页数：26

共 31 条

[1] Galvanic currents and corrosion rates of reinforcements measured in cells simulating different pitting areas caused by chloride attack in sodium hydroxide [J].

Andrade, C. ;

Garces, P. ;

Martinez, I. .

CORROSION SCIENCE, 2008, 50 (10) :2959-2964

[2] Effect of solution heat treatment on galvanic coupling between intermetallics and matrix in AA7075-T6 [J].

Andreatta, F ;

Terryn, H ;

de Wit, JHW .

CORROSION SCIENCE, 2003, 45 (08) :1733-1746

[3] Galvanic corrosion of titanium coupled to welded titanium in LiBr solutions at different temperatures [J].

Blasco-Tamarit, E. ;

Igual-Munoz, A. ;

Garcia Anton, J. ;

Garcia-Garcia, D. M. .

CORROSION SCIENCE, 2009, 51 (05) :1095-1102

[4] IMPEDANCE MEASUREMENTS OF CORRODING MILD-STEEL IN AN AUTOMOTIVE FUEL ETHANOL WITH AND WITHOUT INHIBITOR IN A 2 AND 3 ELECTRODE CELL [J].

DESOUZA, JP ;

MATTOS, OR ;

SATHLER, L ;

TAKENOUTI, H .

CORROSION SCIENCE, 1987, 27 (12) :1351-1364

[5] Current distribution during galvanic corrosion of carbon steel welded with type-309 stainless steel in NaCl solution [J].

Fushimi, Koji ;

Naganuma, Atsushi ;

Azumi, Kazuhisa ;

Kawahara, Yuuzo .

CORROSION SCIENCE, 2008, 50 (03) :903-911

[6] MATHEMATICAL CHARACTERIZATION OF CORROSION CURRENTS IN LOCAL ELECTROLYTIC CELLS [J].

GALOR, L ;

RAZ, Y ;

YAHALOM, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1973, 120 (05) :598-603

[7]

HACK HP, 1989, MATER PERFORMANCE, V28, P72

[8]

JIA J, 2004, MATER CORROS, V11, P55

[9] Influence of geometry on galvanic corrosion of AZ91D coupled to steel [J].

Jia, Jimmy X. ;

Song, Guangling ;

Atrens, Andrej .

CORROSION SCIENCE, 2006, 48 (08) :2133-2153

[10] MATHEMATICAL STUDY OF GALVANIC CORROSION - EQUAL COPLANAR ANODE AND CATHODE WITH UNEQUAL POLARIZATION PARAMETERS [J].

KENNARD, E ;

WABER, JT .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1970, 117 (07) :880-&

← 1 2 3 4 →