海洋用高强钢E690氧浓差腐蚀行为研究

邢佩, 卢琳, 李晓刚

Oxygen-concentration Cell Induced Corrosion of E690 Steel for Ocean Platform

XING Pei, LU Lin, LI Xiaogang

表2 3.5%NaCl中的电化学测试拟合结果

Table 2 Parameters of potentiodynamic polarization curves of E690 in 3.5%NaCl

DO/(mg/L) Ecorr/VSCE Icorr/Acm-2 Ba/(V/dec) Bc/(V/dec) 0.3 -0.825 5.04×10-7 0.0319 -0.3803 1 -0.770 2×10-6 0.0473 -0.2894 2 -0.768 2.65×10-6 0.1017 -0.2327 3 -0.752 3.08×10-6 0.1100 -0.2064 6 -0.510 8.61×10-6 0.1002 -0.1428 8 -0.462 9.19×10-6 0.0828 -0.0990