9%Cr合金钢在含Cl－环境中的初期腐蚀行为及局部腐蚀起源

陈润农, 李昭东, 曹燕光, 张启富, 李晓刚

Initial Corrosion Behavior and Local Corrosion Origin of 9%Cr Alloy Steel in Cl－Containing Environment

CHEN Runnong, LI Zhaodong, CAO Yanguang, ZHANG Qifu, LI Xiaogang

表3 9Cr钢腐蚀样品在2%NaCl溶液中的EIS拟合数据

Table 3 EIS fitting data of corroded 9Cr steels in 2%NaCl solution via the equivalent circuit in Fig.6d

Time / h Rs / (Ω·cm2) Y0 / (10-3 s-n ·Ω-1·cm-2) n Rp / (Ω·cm2) χ2 / 10-3 72 1.127 6.154 0.6797 778.1 3.877 168 1.727 3.841 0.6068 1694.0 1.999 264 2.774 3.662 0.6414 860.2 1.549 360 4.012 9.520 0.5094 704.8 2.809