用电化学噪声技术研究Q235钢在含氯盐模拟混凝土孔隙液中的腐蚀行为

唐荣茂, 刘光明, 刘永强, 师超, 张帮彦, 田继红, 甘鸿禹

Assessment on Corrosion Behavior of Q235 Steel in a Simulated Concrete Pore Liquid Containing Chloride by Electrochemical Noise

TANG Rongmao, LIU Guangming, LIU Yongqiang, SHI Chao, ZHANG Bangyan, TIAN Jihong, GAN Hongyu

表1 Q235钢在SCP溶液中腐蚀不同时间的EIS拟合参数

Table 1 EIS fitting parameters of Q235 steel corrosion in SCP solution for different time

Time/d Rs/Ω·cm2 Rf/Ω·cm2 Qf/Ω-1·cm-2·s-1 nf Rct/Ω·cm2 Qdl/Ω-1·cm-2·s-1 ndl W/Ω·cm2·s-1/2 1 d 3.01 1.82×104 1.05×10-5 0.85 1.08×104 4.01×10-5 0.66 - 3 d 2.13 3.81×104 4.21×10-5 0.93 2.35×104 9.21×10-5 0.60 - 5 d 2.98 2.16×104 4.72×10-5 0.90 2.68×104 1.43×10-4 0.58 - 7 d 3.09 2.15×104 5.74×10-5 0.88 1.56×104 2.19×10-4 0.57 - 10 d 2.88 4.32×102 9.07×10-4 0.78 1.66×104 3.15×10-4 0.77 4.53×10-4