纳秒激光辐照对17-4PH不锈钢电化学腐蚀行为的影响

李萍, 时慧杰, 裴继斌, 王子健, 曹铁山, 程从前, 赵杰

Impact of Nanosecond Pulsed Laser Irradiation on Electrochemical Corrosion Behavior of 17-4PH Stainless Steel

LI Ping, SHI Huijie, PEI Jibin, WANG Zijian, CAO Tieshan, CHENG Congqian, ZHAO Jie

表3 17-4PH不锈钢在3.5%NaCl溶液中EIS的等效电路拟合结果

Table 3 Fitting results of EIS of surface pre-treated 17-4PH stainless steel samples in 3.5%NaCl solution

Samples Rs / Ω·cm2 CPE1 / μΩ-1·cm-2·s n n Rp / 105 Ω·cm2 Grinding 5.2 2.3 0.90 7.6 Chemical passivation 4.0 1.5 0.92 23.2 L1 6.0 2.1 0.82 6.6 L2 6.4 0.9 0.93 47.8 L6 6.4 2.2 0.84 17.8