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5 腐蚀离子的扩散系数

Table 5 Calculated diffusion coefficients of corrosion ions

Phase 3.5%NaCl 0.62 mol/L NaHSO3 (0.31+0.31) mol/L (NaCl+NaHSO3) Cl- HSO3- Cl- HSO3- Fe2O3 2.02×10-5 3.24×10-5 1.64×10-5 2.13×10-5 Cr2O3 5.86×10-10 2.23×10-5 4.32×10-8 2.82×10-5 FeO 4.39×10-5 1.41×10-5 7.06×10-5 8.26×10-6