食用香料1,4-二硫-2,5-二醇环保型缓蚀剂对X70钢在0.5 mol/L H2SO4溶液中的缓蚀性能研究

谭伯川, 张胜涛, 李文坡, 向斌, 强玉杰

Food Spices 2,5-Dihydroxy-1,4-dithiane as an Eco-friendly Corrosion Inhibitor for X70 Steel in 0.5 mol/L H2SO4 Solution

TAN Bochuan, ZHANG Shengtao, LI Wenpo, XIANG Bin, QIANG Yujie

表3 X70钢浸泡在含有不同浓度DDD的0.5 mol/L H2SO4溶液中的极化曲线拟合参数

Table 3 Fitting parameters of polarization curves of X70 steel immersed in 0.5 mol/L H2SO4 solutions with different concentrations of DDD

C / mmol·L-1 Ecorr / V/SCE Icorr / μA·cm-2 βc / mV·dec-1 βa / mV·dec-1 η / % Blank DDD -0.468 520.7 -146.7 44.9 --- 0.5 -0.473 107.6 -98.3 60.4 79.3 1 -0.473 81.2 -99.5 45.6 84.4 2 -0.490 53.6 -106.8 79.6 89.7 5 -0.503 30.2 -114.0 87.9 94.2