Numerical Simulation for Crevice Corrosion of 304 Stainless Steel in Sodium Chloride Solution

被引：0
作者：
WANG Wei SUN Huyuan SUN Lijuan SONG Zuwei and ZANG Beini Institute of Oceanology Chinese Academy of Sciences Qingdao P R China Graduate University of Chinese Academy of Sciences Beijing P R China Shandong Provincial Key Ialoratory of Corrosion Science Qingdao P R China [1 ,2 ,3 ,1 ,3 ,1 ,3 ,1 ,2 ,3 ,1 ,2 ,3 ,1 ,266071 ,2 ,100049 ,3 ,266071 ]
机构：
来源：
ChemicalResearchinChineseUniversities | 2010年 / 26卷 / 05期
关键词：
Crevice corrosion; Finite element method(FEM); Current density; pH; Multi anodic reaction;
D O I：
暂无
中图分类号：
TG172 [各种类型的金属腐蚀];
学科分类号：
080503 ;
摘要：
The authors presented a mechanistic model describing the chemical reactions within a corroded thin, nar-row crevice. In the mathematical model, a two-dimensional steady-state was used to predict the crevice pH profile by taking into account dissolved oxygen and hydrogen ions within the crevice. It consists of six parallel electrochemical reactions: multi anodic reactions(Fe, Cr, Ni dissolution reactions) and three cathodic reactions(the oxygen reduction, the hydrogen reaction and water dissociation). Current density distribution and oxygen concentration distribution were determined to be corresponding to the evolution of potential distribution within the crevice. The contribution of each metal reaction to the overall corrosion process was in proportion to the mole fraction, and the simulation pro-vided a good agreement with published experimental results for the crevice corrosion of stainless steel in sodium chloride solution.
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页码：822 / 828
页数：7
相关论文
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[1]  
Evaluation of the probability distribution of pitting corrosion fatigue life in aircraft materials[J] . Wang Qingyuan,N. Kawagoishi,Q. Chen,R. M. Pidaparti.Acta Mechanica Sinica . 2003 (3)
[2]  
The Determination of pH,Potentail and Chloride Concentration in Corroding Crevice on 304 Stainless Steel and 7475 Aluminium Alloy .2 Alavi A,Cottis R A. Corrosion Science . 1987
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