Cl-与HSO3-对建筑用439不锈钢腐蚀行为的影响

陈昊, 樊志彬, 陈志坚, 周学杰, 郑鹏华, 吴军

Effect of Cl- and HSO3- on Corrosion Behavior of 439 Stainless Steel Used in Construction

CHEN Hao, FAN Zhibin, CHEN Zhijian, ZHOU Xuejie, ZHENG Penghua, WU Jun

表2 循环极化曲线特征参数

Table 2 Characteristic parameters of cyclic polarization curves

Solution / mol·L-1 Ecorr / V Icorr / μA·cm-2 Eb / V Ep / V Eb-Ep / V 0.62 NaCl -0.071 0.119 0.320 --- --- 0.05 NaHSO3 -0.017 0.067 0.792 0.332 0.460 0.10 NaHSO3 -0.073 0.101 0.779 0.321 0.459 0.50 NaHSO3 -0.079 0.147 0.615 0.227 0.388 (0.62+0.05) NaCl+NaHSO3 -0.358 0.938 -0.189 -0.490 --- (0.62+0.10) NaCl+NaHSO3 -0.282 0.613 0.258 -0.491 --- (0.62+0.50) NaCl+NaHSO3 -0.323 0.405 0.424 -0.444 ---