| NaOH溶液中表面活性剂对工业纯铝的缓蚀作用 |
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| 引用本文： | 邓书端,李向红,付惠,刘军国. NaOH溶液中表面活性剂对工业纯铝的缓蚀作用[J]. 全面腐蚀控制, 2011, 25(5): 38-40,48 |
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| 作者姓名： | 邓书端 李向红 付惠 刘军国 |
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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： | 云南省应用基础研究面上项目(2009CD072); 西南林业大学林产化工加工工程校级重点学科建设项目(XKX200907) |
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| 摘 要： | 采用失重法研究了阴离子表面活性剂油酸钠(SO)和阳离子表面活性剂溴化十四烷基吡啶(TDPB)在0.1mol/LNaOH溶液(20~50℃)中对工业纯铝的缓蚀作用。结果表明:SO在20~50℃时对铝基本无缓蚀作用。TDPB对铝在20℃和30℃时缓蚀效果较差;但在40℃和50℃时TDPB对铝具有良好的缓蚀作用,50℃时1.0×10-3mol/LTDPB对铝的最大缓蚀率为81.2%。TDPB在铝表面的吸附符合校正的Langmuir吸附模型,根据热力学公式求出了吸附热力参数(吸附自由能ΔG0,吸附焓ΔH0,吸附熵ΔS0),并用吸附观点讨论了缓蚀作用机理。
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| 关 键 词： | 表面活性剂 溴化十四烷基吡啶 油酸钠 NaOH 铝 缓蚀 吸附 |
Corrosion Inhibition by Surfactants for Industrial Pure Aluminium in NaOH Solution |
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| DENG Shu-duan,LI Xiang-hong,FU Hui,LIU Jun-guo. Corrosion Inhibition by Surfactants for Industrial Pure Aluminium in NaOH Solution[J]. Total Corrosion Control, 2011, 25(5): 38-40,48 |
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| Authors: | DENG Shu-duan LI Xiang-hong FU Hui LIU Jun-guo |
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| Affiliation: | DENG Shu-duan1,LI Xiang-hong2,FU Hui2,LIU Jun-guo1(1,2.Southwest Forestry University,Kunming 650224,China) |
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| Abstract: | The inhibition effects of anionic surfactant of sodium oleate（SO） and cationic surfactant of tetradecylpyridinium bromide（TDPB） on the corrosion of industrial aluminium in 0.1 mol/L NaOH solution at 20 ~ 50℃ was studied using weight loss method.The results show that SO exhibits no inhibition performance on aluminium at 20 ~ 50℃.TDPB has poor inhibitive ability at 20 and 30℃.But at 40 and 50℃,TDPB is a good inhibitor,and the maximum inhibition efficiency is 81.2% with 1.0 × 10-3 mol/L TDPB at 50℃.The adsorption of TDPB on aluminium surface obeys amended Langmuir adsorption isotherm.The adsorption thermodynamic parameters（adsorption free energy ΔG0,adsorption enthalpy ΔH0,adsorption entropy ΔS0） are also calculated according to basic thermodynamic equation.The inhibitive mechanism is discussed from the viewpoint of adsorption. |
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| Keywords: | surfactant tetradecylpyridinium bromide sodium oleate NaOH aluminium inhibition adsorption |
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