交变应力频率对E690钢在3.5%NaCl溶液中腐蚀电化学行为的影响

张腾, 刘静, 黄峰, 胡骞, 戈方宇

Effect of Alternating Stress Frequency on Corrosion Electrochemical Behavior of E690 Steel in 3.5%NaCl Solution

ZHANG Teng, LIU Jing, HUANG Feng, HU Qian, GE Fangyu

表2 不同加载频率下E690钢在3.5%NaCl溶液中的EIS拟合参数值

Table 2 Fitting parameters of EIS of E690 steel in 3.5%NaCl solution under different loading frequencies

Load frequency / Hz RsΩ·cm2 CeffμF·cm2 Y0sn·Ω-1·cm-2 n RctΩ·cm2 Free 5.019 428.99 1.296×10-3 0.7577 1555 0.1 3.870 81.43 7.823×10-4 0.7195 1112 0.5 4.490 128.03 7.352×10-4 0.7659 883 1.0 4.688 171.48 9.075×10-4 0.7664 682 1.3 4.233 251.36 1.075×10-3 0.7879 734 1.8 4.340 240.82 9.646×10-4 0.7980 709 2.0 4.228 149.41 7.033×10-4 0.7899 710