武汉地铁钢轨在典型隧道环境中的腐蚀现状分析

庞涛, 刘静, 黄峰, 李闯, 赵国知, 黄先球, 郑建国, 程鹏

Corrosion Survey of Subway Rails in Typical Tunnel Environments at Wuhan Region of Central China

PANG Tao, LIU Jing, HUANG Feng, LI Chuang, ZHAO Guozhi, HUANG Xianqiu, ZHENG Jianguo, CHENG Peng

图9 污水浸泡环境钢轨腐蚀机理示意图

Fig.9 Schematic diagram of rail corrosion in sewage immersion environment: (a) corrosive medium containing chloride ion and sulfate radical reacts with the oxide layer and substrate at the defect site of the oxide layer, (b) concentration of stress in the rust layer produces local bubbling