BEM Analysis for Galvanic Corrosion of Hot Dip Galvanized Steel Immersed in Seawater

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (02): 194-198.

BEM Analysis for Galvanic Corrosion of Hot Dip Galvanized Steel Immersed in Seawater

李焰¹;唐晓²;张玉志²;刘猛²

1. 青岛市中国科学院海洋研究所
2. 中国科学院海洋研究所

收稿日期:2007-11-22 修回日期:2008-04-27 出版日期:2009-03-28 发布日期:2009-10-10
通讯作者: 李焰
基金资助:
Grant No. 2006BS07008;国家自然科学基金;Grant No. 2006BS07008;国家自然科学基金

Boundary Element Method (BEM) Analysis for Galvanic Corrosion of Hot Dip Galvanized Steel Immersed in Seawater

Xiao Tang¹⁾, Yuzhi Zhang^1,2), Meng Liu^1,2) and Yan Li^1)†

1) Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2) Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2007-11-22 Revised:2008-04-27 Online:2009-03-28 Published:2009-10-10
Contact: Yan LI
Supported by:
National Natural Science Foundation of China (Grant No. 40576038), and Doctoral Foundation of Department of Science
Technology of Shandong Province, China (Grant No. 2006BS07008)

摘要/Abstract

Abstract:

A numerical analysis of galvanic corrosion of hot-dip galvanized steel immersed in seawater was presented. The analysis was based on the boundary element methods (BEMs) coupled with Newton-Raphson iterative technique to treat the nonlinear boundary conditions, which were determined by the experimental polarization curves. Results showed that galvanic current density concentrates on the boundary of steel substrate and zinc coating, and the sacrificial protection of zinc coating to steel substrate results in overprotection of steel cathode. Not only oxygen reduction but also hydrogen reduction could occur as cathode reactions, which probably led up to the adsorption and absorption of hydrogen atoms. Flat galvanized steel tensile sample shows a brittle behavior similar to hydrogen embrittlement according to the SSRT (show strain rate test) in seawater.

Key words: Galvanic corrosion, BEM, Hydrogen absorption, Potential distribution, Current density distribution

李焰唐晓张玉志刘猛. BEM Analysis for Galvanic Corrosion of Hot Dip Galvanized Steel Immersed in Seawater[J]. J. Mater. Sci. Technol., 2009, 25(02): 194-198.

Xiao Tang,Yuzhi Zhang,Meng Liu,Yan Li. Boundary Element Method (BEM) Analysis for Galvanic Corrosion of Hot Dip Galvanized Steel Immersed in Seawater[J]. J Mater Sci Technol, 2009, 25(02): 194-198.

参考文献

[1 ] G.A. El-Mahdy, A. Nishikata and T. Tsuru: Corros. Sci., 2000, 42(1), 183.
[2 ] C.J. Slunder and W.K. Boyd: Zinc: Its Corrosion Resistance, 2nd edn, International Lead Zinc Research Organization, Inc., New York, 1986.
[3 ] Y. Li: Bull. Mater. Sci., 2001, 24(4), 101.
[4 ] J.M. Lee: Electrochimi. Acta, 2006, 51(16), 3256.
[5 ] D.A. Worsley, S.M. Powell and H.N. McMurry: Corrosion, 2000, 56(5), 492.
[6 ] Z. Panossian, L. Mariaca, M. Morcillo, S. Flores, J. Rocha, J.J. Peña, F. Herrera, F. Corvo, M. Sanchez, O.T. Rincon, G. Pridybailo and J. Simancas: Surf. Coat. Technol., 2005, 190(2-3), 244.
[7 ] A. Tahara and T. Kodama: Corros. Sci., 2000, 42(4), 655.
[8 ] K. Amaya and S. Aoki: Eng. Anal. Bound. Elem., 2003, 27(5), 507.
[9 ] D.J. Danson and M.A. Warne: Current Density/Voltage Calculation Using Boundary Element Techniques, NACE Coherence, Los Angeles, 1983.
[10] R.A. Adey and S.M. Niku: ASTM Symposium on Computer Modeling for Corrosion, San Antonio, 1990.
[11] F. Druesne, P. Paumelle and P. Villon: J. Mater. Process. Technol., 2001, 118(1-3), 368.
[12] F.E. Varela, Y. Kurata and N. Sanada: Boundary Element Technology XI, WIT Press, Boston, 1997.
[13] F.E. Varela, Y. Kurata and N. Sanada: Corros. Sci., 1997, 39(4), 775.
[14] J.X. Jia, G.L. Song and A. Atrens: Corros. Sci., 2006, 48(8), 2133.
[15] X.G. Zhang: Corrosion, 1998, 56(2), 139.
[16] G.F. Karlis, S.V. Tsinopoulos, D. Polyzos and D.E. Beskos: Comput. Method. Appl. M., 2007, 196(49-52), 5092.
[17] X.W. Gao, C. Zhang, J. Sladek and V. Sladek: Compos. Sci. Technol., 2008, 68(5), 1209.
[18] T.Y. Qin, Y.S. Yu and N.A. Noda: Int. J. Solids Struct., 2007, 44(14-15), 4770.
[19] T.Y. Qin and R.J. Tang: Int. J. Fracture, 1993, 60(4), 373.
[20] T.T.M. Onyango, D.B. Ingham and D. Lesnic: Comput. Math. Appl., 2008, 56(1), 114.
[21] G.R. Fernandes and W.S. Venturini: Eng. Anal. Bound. Elem., 2007, 31(8), 721.