NaCl溶液温度和含量对热处理后钢轨腐蚀行为的影响

李自立, 王欣纪, 田春洋, 叶沛聪, 刘海乔, 何成刚, 刘吉华

Influence of NaCl Temperature and Content on Corrosion Behavior of Heat Treated Rail Steel

LI Zili, WANG Xinji, TIAN Chunyang, YE Peicong, LIU Haiqiao, HE Chenggang, LIU Jihua

表1 热处理U75V钢轨试样在不同NaCl溶液温度与含量中的电化学阻抗拟合结果

Table 1 Fitting results of electrochemical impedance of heat-treated U75V steel rail samples under different NaCl solution temperatures and different contents

Code name t / h Rs / Ω.cm2 Rct / Ω.cm2 Qedl / 10-4 Ω-1·cm-2·sn n 5.0%-25 ℃ 48 7.669 2513 35.33 0.787 96 7.455 1415 47.96 0.755 144 7.896 2503 52.56 0.807 5.0%-35 ℃ 48 6.639 1360 34.99 0.801 96 6.390 1210 44.03 0.816 144 6.420 1917 10.02 0.731 5.0%-45 ℃ 48 6.040 1142 43.58 0.789 96 5.432 930.1 53.78 0.799 144 6.122 1038 46.41 0.784 2.0%-25 ℃ 48 10.15 1439 29.55 0.778 96 11.66 1176 74.52 0.709 144 10.17 2382 47.14 0.779 3.5%-25 ℃ 48 8.057 1327 27.53 0.785 96 8.506 1219 44.55 0.772 144 9.871 1947 46.12 0.753