利用WBE及EIS测试技术对管道缺陷区动态冲刷腐蚀行为的研究

杨留洋, 谭卓伟, 李同跃, 张大磊, 邢少华, 鞠虹

Dynamic Corrosion Behavior of Pipeline Defects Characterized by WBE and EIS Testing Techniques

YANG Liuyang, TAN Zhuowei, LI Tongyue, ZHANG Dalei, XING Shaohua, JU Hong

表1 缺陷试样不同排列耦合的阻值参数变化

Table 1 Fitting resistance parameters of the different zones of the defective sample

Position Rs/Ω·cm2 Y0(Qf)/Ω-1 cm-2s n Rf/Ω·cm2 Y0(Qct)/Ω-1 cm-2s n Rct/Ω·cm2 Upper 1 6.670×10-1 6.475×10-4 3.309 5.762×10-3 14.41 Upper 2 5.281×10-1 4.645×10-3 3.003 6.359×10-3 10.08 Defects 6.973×10-1 5.264×10-3 3.682 3.169×10-3 15.27 Lower 1 5.608×10-1 - - 2.344×10-2 5.092 Lower 2 6.523×10-1 9.729×10-4 3.133 6.353×10-3 14.58