X70管线钢在大庆土壤环境中微生物腐蚀行为研究

陈旭, 李帅兵, 郑忠硕, 肖继博, 明男希, 何川

Microbial Corrosion Behavior of X70 Pipeline Steel in an Artificial Solution for Simulation of Soil Corrosivityat Daqing Area

CHEN Xu, LI Shuaibing, ZHENG Zhongshuo, XIAO Jibo, MING Nanxi, HE Chuan

表1 X70钢在含SRB的大庆土壤模拟溶液中EIS拟合结果

Table 1 EIS fitting results for X70 steel in Daqing soil simulated solution containing SRB

Time d	R_s Ω·cm²	CPE₁ F·cm^-2	n₁	R_f Ω·cm²	CPE₂ F·cm^-2	n₂	R_ct Ω·cm²
4	66.09	1.2×10^-3	---	22.48	2.10×10^-3	0.86	4.25×10⁴
7	68.68	0.5×10^-3	0.89	405.11	0.27×10^-3	---	1.71×10⁵
10	70.49	2.5×10^-3	0.89	207.10	0.33×10^-3	---	4.66×10⁴
14	65.53	2.8×10^-3	0.85	191.00	0.30×10^-3	---	3.73×10⁴