690 MPa级高强贝氏体钢在模拟乡村大气中的腐蚀行为

刘海霞, 黄峰, 袁玮, 胡骞, 刘静

Corrosion Behavior of 690 MPa Grade High Strength Bainite Steel in a Simulated Rural Atmosphere

LIU Haixia, HUANG Feng, YUAN Wei, HU Qian, LIU Jing

表2 3种钢腐蚀不同时间后的EIS拟合结果

Table 2 EIS fitting results of three corroded steels at different time

Samples Timeh RctΩ·cm2 CPEdl10-4 F·cm-2 RrustΩ·cm2 CPErust10-7 F·cm-2 Q690 48 2013.3 38.9 --- --- 192 3048 20.7 663.1 48.4 768 3142 8.7 1057.2 1.6 Corten-A 48 831.4 40.9 --- --- 192 872.1 21.2 255.8 296.1 768 1789.5 12.8 511.4 12.7 Q235 48 609.9 43.1 --- --- 192 799.2 29.5 235.2 603.5 768 932.7 14.8 312.3 35.6