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Citation: JI Eyu, CHEN Hailing, LI Changming. Pitting Corrosion of Stainless Steel Pipes via MnS Dissolution and Microbial Corrosion[J]. Chinese Journal of Applied Chemistry, ;2012, 29(1): 100-105. doi: 10.3724/SP.J.1095.2012.00037 shu

Pitting Corrosion of Stainless Steel Pipes via MnS Dissolution and Microbial Corrosion

1.
a Nanyang Institute of Technology, Nanyang 473004, China;
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b Henan Electric Power Test Research Institute, Zhengzhou 450007, China

Corresponding author: JI Eyu,
Received Date: 20 January 2011
Available Online: 9 June 2011
Fund Project: 河南省科技厅项目(0524270015) (0524270015)

The microstructure and composition of the stainless steel water tubes used for the condensers in power plants and the deposits near the corrosion holes were analyzed by SEM and EDS,respectively.The electrochemical reaction mechanism of MnS dissolution and microbial corrosion were explored,and a synergistic effect of both corrosions was found in the process of pitting corrosion.Based on the comprehensive analysis of various factors affecting the stainless-steel's corrosion,some preventive measures are put forward to help the stainless steel condensers function smoothly.
- condenser,
- stainless steel pipe,
- dissolution of MnS,
- microbial corrosion
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