【作者】 柳泉； 刘奎仁； 韩庆； 涂赣峰；

【Author】 LIU Quan LIU Kui-ren HAN Qing TU Gan-feng (School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China)

【机构】 东北大学材料与冶金学院；

【摘要】 研究了有机溶剂（无水乙醇、丙酮、乙酸乙酯、四氢呋喃、甲苯和苯）、成分配比和温度等时苯基三甲基氯化铵/无水三氯化铝（TMPAC/AlCl₃）离子液体电导率的影响,优化了饺液体系,并采用SEM、XRD及电化学阻抗谱（EIS）等对制备的铝镀层进行了表征。实验结果表明,在AlCl₃所占摩尔分数为66.7%时,离子液体电导率最高。除苯能够显著提高电导率外,其余溶剂均对该体系不利。离子液体的电导率随着苯浓度的增加而增大,并在苯浓度为50%（体积分数,以下同）时,达到最大值。不同苯浓度的离子液体电导率均随温度的升高而增大,在较低温度范围内,其关系曲线符合Arrhenius方程。在含苯50%的TMPAC/AlCl₃离子液体中电镀,获得了表面平整致密的银白色纯铝镀层,该镀层具有优异的耐蚀性能。更多还原

【Abstract】 This paper studied influences of organic solvents （ethanol,acetone,ethyl acetate,tetrahydrofuran, toluene and benzene）,composition and temperature on electric conductivity of trimethyl-phenyl-ammonium chloride/anhydrous aluminum chloride （TMPAC/AlCl₃） ionic liquids,optimized the bath system and charac- terized Al deposition prepared by using the methods of SEM,XRD and EIS.Experimental results showed that the ionic liquids whit AlCl₃ mole fraction 66.67% had the highest electric conductivity.Except that benzene could significantly improve the electric conductivity,the other solvents are detrimental to this system.The elec- tric conductivity of ionic liquids increased with the rise of benzene concentration,and when the concentration of benzene was 50%（vol.）,the electric conductivity reached the maximum.The electric conductivity of ionic liq- uids with different concentrations of benzene rised as the temperature increased.Relation curves between tem- perature and electric conductivity were satisfaied with Arrhenius equation in a lower temperature range.In the TMPAC/AlCl₃ ionic liquids with benzene concentration 50%（vol.）,silvery aluminum deposition with dense surface of was prepared and had a excellent corrosion resistance.更多还原