模拟海洋大气环境中镀锌钢的腐蚀行为和机理

王瑾, 宁培栋, 刘倩倩, 陈娜娜, 张新, 肖葵

Corrosion Behavior of Galvanized Steel in a Simulated Marine Atmospheric Environment

WANG Jin, NING Peidong, LIU Qianqian, CHEN Nana, ZHANG Xin, XIAO Kui

表3 GI板在酸性 (50±5) g/L NaCl溶液中的等效电路元件拟合值

Table 3 Equivalent circuit element fitting values of GI plate in acidic (50±5) g/L NaCl solution

Time / d Rs / Ω·cm2 Rf / Ω·cm2 Q1 / F·cm-2 n1 Q2 / F·cm-2 n2 Rr / Ω·cm2 Q3 / F·cm-2 n3 Rct / Ω·cm2 Chi-squared 24 24.3 - - - 1.89×10-5 0.9 16.2 1.3×10-3 0.5 1.36×103 1.2×10-3 56 23.5 - - - 6.18×10-6 0.7 440.2 4.2×10-5 0.6 1.75×104 2.8×10-3 104 24.8 - - - 6.34×10-5 0.6 71.6 3.1×10-3 0.5 1.39×103 4.0×10-4 120 8×10-5 370 9×10-5 0.3 1.4×10-4 0.6 3.1×103 5×10-4 0.6 7.5×103 4.84×10-5