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4 X70钢在不同温度下浸泡在未含DDD的0.5 mol/L H2SO4溶液中的极化曲线拟合参数

Table 4 Fitting parameters of polarization curves of X70 steel immersed in 0.5 mol/L H2SO4 solution without DDD at different temperatures

T / K C / mmol·L-1 Ecorr / V/SCE Icorr / μA·cm-2 βc / mV·dec-1 βa / mV·dec-1 η / % 298 0 -0.468 520.7 -146.7 44.9 --- 5 -0.503 30.2 -114.0 87.9 94.2 303 0 -0.474 543.2 -148.2 56.2 --- 5 -0.483 35.8 -104.6 92.1 93.4 308 0 -0.475 552.9 -140.4 55.4 --- 5 -0.500 37.6 -109.8 98.9 93.2 313 0 -0.467 568.1 -138.9 58.9 --- 5 -0.475 40.3 -110.6 82.2 92.9