S2-对316L不锈钢在模拟油田污水中的腐蚀行为影响研究

张龙华, 李长君, 潘磊, 韩思柯, 王昕, 崔中雨

Corrosion Behavior of 316L Stainless Steel in Simulated Oilfield Wastewater

ZHANG Longhua, LI Changjun, PAN Lei, HAN Sike, WANG Xin, CUI Zhongyu

表1 等效电路得到的EIS拟合参数值

Table 1 Fitting parameters of values equivalent circuit model

E / VSCE Sulfide concentration / mg·L-1 Rs / Ω·cm2 Q1 / 10-4 Ω-1·cm-2·sn n R1 / Ω·cm2 W / Ω·cm2·s-0.5 ᵡ2 / 10-3 -0.1 0 6.8 7.67 0.82 79.2 --- 2.32 50 6.1 1.22 0.84 1.1 148.2 3.82 100 6.6 1.11 0.86 1.9 144.7 2.62 200 5.3 1.36 0.78 0.6 87.5 2.56 -0.2 0 6.9 6.12 0.87 71.1 --- 2.13 50 5.3 1.31 0.86 1.7 147.7 3.98 100 7.3 1.29 0.82 1.2 134.5 1.18 200 6.3 1.51 0.79 0.5 94.2 2.41 -0.3 0 --- --- --- --- --- --- 50 5.1 1.75 0.83 1.2 157.8 1.26 100 7.3 1.41 0.94 0.9 182.5 1.90 200 7.4 1.97 0.92 0.4 167.8 1.11 -0.4 0 --- --- --- --- --- --- 50 4.9 1.61 0.89 42.7 --- 1.05 100 4.3 3.31 0.85 37.3 --- 1.06 200 4.8 4.31 0.89 24.9 --- 1.61