【作者】 李向红； 付惠； 刘铭； 梁伟钦；

【Author】 LI Xiang-hong;FU Hui;LIU Ming;LIANG Wei-qing;Department of Fundamental Courses,Southwest Forestry University;

【机构】 西南林学院基础部；

【摘要】 用失重法研究了酸碱指示剂中性红在1.0 mol/L H₂SO₄溶液中对冷轧钢的缓蚀作用。结果表明:中性红对冷轧钢具有良好的缓蚀作用,且在钢表面的吸附符合校正的Langmuir吸附等温式,缓蚀率随缓蚀剂浓度的增加而增大,但随温度的增加而减小。通过吸附理论求出了相应的吸附热力学（吸附自由能ΔG⁰,吸附热ΔH⁰,吸附熵ΔS⁰）,并根据这些参数讨论了缓蚀作用机理。更多还原

【Abstract】 The inhibition effect of neutral red（NR） on the corrosion of cold rolled steel（CRS） in 1.0 mol/L H₂SO₄has been studied by weight loss method.The results show that neutral red is a good inhibitor in 1.0 mol/L H₂SO₄ for CRS,and the adsorption of neutral red（NR） on the CRS surface follows the Langmuir adsorption isotherm equation.Inhibition efficiency increases with the increase of inhibitor concentration,while decreases with the temperature.Three adsorption thermodynamic parameters（adsorption free energy ΔG⁰,adsorption heat ΔH⁰,adsorption entropy AS） were obtained from adsorption theory.Based on the parameters,the inhibitive mechanism was discussed in detail.更多还原