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1 439不锈钢极化曲线及阻抗谱拟合参数

Table 1 Fitting electrochemical parameters of polarization curves and EIS of 439 stainless steel

NaCl (aq) EcorrV IcorrμA·cm-2 Pitting potential / V Passive areas V RsΩ·cm-2 Q1F·cm-2 n1 R1Ω·cm-2 Q2F·cm-2 n2 R2Ω·cm-2 3.5% -0.071 0.119 0.320 0.231 46.94 1.20×10-5 0.87 4.96×104 1.93×10-5 0.65 4.05×105 6.0% -0.099 0.164 0.286 0.264 27.85 1.22×10-5 0.91 1.38×104 2.09×10-5 0.64 3.67×105 10.0% -0.218 0.518 0.092 0.190 18.94 4.00×10-5 0.83 1.21×104 5.73×10-5 0.40 1.24×105 14.0% -0.175 0.509 0.183 0.238 17.13 4.71×10-5 0.91 8.14×103 2.74×10-5 0.66 2.13×105 18.0% -0.140 0.285 0.160 0.180 12.29 1.62×10-5 0.92 8.59×103 2.52×10-5 0.61 2.71×105