模拟浅海及深海环境中阴极极化对10CrNi5MoV钢氢脆敏感性的影响

项琦峰, 赵阳, 张涛, 王福会

Influence of Cathodic Polarization on Hydrogen Embrittlement Susceptibility of 10CrNi5MoV Steel in Simulated Shallow-sea and Deep-sea Environment

XIANG Qifeng, ZHAO Yang, ZHANG Tao, WANG Fuhui

表1 浅海和深海环境不同极化电位下10CrNi5MoV钢EIS等效电路拟合参数

Table 1 Fitting parameters of EIS date of 10CrNi5MoV steel at different cathodic polarization potentials in the shallow- and deep-sea environment

Environment Potential / mV Rs / Ω·cm2 Qf / 10-3 F·cm-2 n1 Rf / Ω·cm2 Qdl / 10-3 F·cm-2 n2 Rt / Ω·cm2 Shallow-sea (0 m) OCP 6.142 2.625 0.876 6.036 5.147 0.894 2310 -850 6.182 1.937 0.885 5.734 2.265 0.895 25690 -950 6.251 2.900 0.826 3.07 1.434 0.860 9890 -1050 6.884 - - - 5.912 0.723 1140 Environment Potential / mV Rs / Ω·cm2 Qf / 10-4 F·cm-2 n1 Rf / Ω·cm2 Qdl / 10-3 F·cm-2 n2 Rt / 104 Ω·cm2 Deep-sea (1000 m) OCP 1.126 1.631 0.849 28.26 2.174 0.893 15530 -850 10.18 3.122 0.851 26.45 2.139 0.919 22790 -950 13.98 4.458 0.751 6.76 7.232 0.878 17760 -1050 11.32 - - - 5.175 0.747 2320