| H3PO4中染料中性红对钢的缓蚀性能 |
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| 引用本文： | 邓书端,李向红,付惠.H3PO4中染料中性红对钢的缓蚀性能[J].云南化工,2011,38(1):14-16,47. |
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| 作者姓名： | 邓书端 李向红 付惠 |
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| 作者单位： | 1. 西南林业大学木质科学与装饰工程学院,云南,昆明,650224
2. 西南林业大学基础部,云南,昆明,650224 |
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| 基金项目： | 云南省教育厅自然科学研究基金，西南林业大学林产化工加工工程校级重点学科建设项目 |
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| 摘 要： | 用失重法研究了染料中性红对冷轧钢在1.0 mol/LH3PO4溶液中的缓蚀作用。结果表明：中性红对冷轧钢在1.0 mol/LH3PO4溶液中具有良好的缓蚀作用。缓蚀率先随缓蚀剂浓度的增加而增大,后减小,存在浓度极值现象;缓蚀率随温度的升高而增大。在吸附区间（25～150 mg/L）中性红在钢表面的吸附符合Temkin吸附等温式。通过热力学基本公式求出了相应的吸附热力学（吸附自由能△G0,吸附焓△H0,吸附熵△S0）;根据这些参数讨论了缓蚀作用机理。
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| 关 键 词： | 中性红 吸附 缓蚀 浓度极值 |
Inhibition Effect of Neutral Red on Cold Rolled Steel in H3PO4 Solution |
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| DENG Shu-duan,LI Xiang-hong,FU Hui.Inhibition Effect of Neutral Red on Cold Rolled Steel in H3PO4 Solution[J].Yunnan Chemical Technology,2011,38(1):14-16,47. |
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| Authors: | DENG Shu-duan LI Xiang-hong FU Hui |
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| Affiliation: | DENG Shu-duan1,LI Xiang-hong2,FU Hui2(1.Faculty of Wood Science and Decoration Engineering,Southwest Forestry University,Kunming 650224,China,2.Department of Fundamental Courses,China) |
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| Abstract: | The adsorption and inhibition effect of neutral red on cold rolled steel（CRS） in 1.0mol/L H3PO4 solution at 20℃~50℃ was investigated by weight loss method.The results show that neutral red is a good inhibitor for CRS in H3PO4 solution.Inhibition efficiency increases the inhibitor concentration,then decreases.In other words,there is an extreme-value-phenomena of inhibitor concentration.The adsorption of neutral red on CRS surface obeys Temkin adsorption isotherm equation with the adsorption concentration range（25~150mg/L）.Three adsorption thermodynamic parameters（adsorption free energy ΔG0,adsorption heat ΔH0,adsorption entropy ΔS0） are also calculated by the thermodynamic basic equation.The inhibitive mechanism is discussed according to the parameters. |
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| Keywords: | neutral red adsorption inhibition extreme-value-phenomena of concentration |
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