含咪唑啉磷酸酯的复配缓蚀剂对Q235钢的缓蚀行为研究  

Inhibition Performance of Compound Inhibitor of Imidazoline Phosphate for Q235 Steel

作　　者：于会华[1] 张静[1] 杜敏[1] 

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,青岛266100

出　　处：《表面技术》2010年第3期48-51,共4页Surface Technology

基　　金：国家自然科学基金资助项目(40806030)

摘　　要：将自制咪唑啉磷酸酯盐与KI复配,采用失重法、极化曲线和交流阻抗法研究了该缓蚀剂在1mol/L HCl水溶液中对Q235钢的缓蚀行为,探讨了其在Q235钢表面的吸附行为。结果表明:该缓蚀剂在1mol/L HCl水溶液中对Q235钢为混合偏阴极型缓蚀剂;缓蚀率随缓蚀剂浓度的增大而增加;该缓蚀剂在Q235钢表面的吸附模式遵循Langmuir吸附。The inhibitive effect against Q235 steel and adsorption behavior of compound inhibitor including imidazoline phosphate and KI was studied in 1 mol/L HCl solution using weight-loss method,polarization curve and electrochemical impedance spectroscopy（EIS） techniques.Results show that the compound inhibitor is mix-type inhibitor which mainly inhibites cathodic process against Q235 steel in 1 mol/L HCl solution.The inhibition efficiency increases with the increasement of inhibitor concentration.It is seen that the adsorption of compound inhibitor on Q235 steel fits the Langmuir isotherm equation.

关 键 词：咪唑啉磷酸酯 极化曲线 交流阻抗 缓蚀机理 LANGMUIR吸附 

分 类 号：TG174.42[金属学及工艺—金属表面处理]