地下储氢库J55钢氢环境下微生物腐蚀机理研究

姜慧芳, 刘扬豪, 刘莹, 李迎超, 于浩波, 赵博, 陈曦

Mechanism of Microbial Corrosion of J55 Steel in Hydrogen-containing Environments in Underground Hydrogen Storage Facilities

JIANG Huifang, LIU Yanghao, LIU Ying, LI Yingchao, YU Haobo, ZHAO Bo, CHEN Xi

表1 不同条件下培养7 d的J55钢U形弯试样和方形试样的Tafel 曲线拟合的电化学参数。

Table 1 Electrochemical parameters for Tafel curve fitting of U-bend and square specimens of J55 steel incubated for 7 d under different conditions

Experimental condition Icorr / A·cm-2 Ecorr (V) vs. Ag/AgCl βa / V·dec-1 βc / V·dec-1 Sterile + square specimen 9.06 × 10-7 -0.707 0.105 -0.111 Sterile + U-bend specimen 1.73 × 10-6 -0.685 0.063 -0.141 SRB + square specimen 1.43 × 10-5 -0.623 0.073 -0.041 SRB + U-bend specimen 8.05 × 10-5 -0.755 0.409 -0.032 SRB + U-bend specimen + 0.22%H2 8.18 × 10-5 -0.825 0.635 -0.011 SRB + U-bend specimen + 0.44%H2 2.32 × 10-4 -0.759 0.617 -0.018