【作者】 印仁和； 万宗跃； 徐群杰； 陈浩； 朱律均； 周国定；

【Author】 YIN Renhe~1 WAN Zongyue~1 XU Qunjie~2 CHEN Hao~1 ZHU Lvjun~1 ZHOU,Guoding~2 1.Department of Chemistry,Shanghai University,Shanghai 200444,China. 2.Department of Environment Engieering,Shanghai University of Electric Power,Shanghai 200090,China

【机构】 上海大学理学院化学系； 上海电力学院环境工程系国家电力公司热力设备腐蚀与防护重点实验室；

【摘要】 3-氨基-1,2,4-三氮唑(ATA)是一种环境友好型金属处理剂,以其在 Cu-Ni 合金表面制备了自组装单分子膜(SAMs), 用电化学方法研究 ATA SAMs 对 Cu-Ni 合金的缓蚀作用及其吸附行为.结果表明,ATA 分子易在 Cu-Ni 合金表面形成稳定的 ATASAMs,抑制了 Cu-Ni 合金的阳极氧化过程,改变了电极表面双电层结构,使零电荷电位负移,固/液界面双电层电容明显降低,有良好的缓蚀效果,这与交流阻抗和极化曲线得到的结论一致.同时研究表明 ATA 的吸附行为符合 Langmuir 吸附等温式,吸附机理是典型的化学吸附.更多还原

【Abstract】 The anticorrosion and inhibiting mechanism for the self-assembled monolayers(the SAMs)of 3-amino-1,2,4-triazole (ATA)on the surface of Cu-Ni alloy have been investigated by electrochemical method,as well as its adsorption behavior.The results indicate that ATA is liable to interact with Cu-Ni alloy as a result of formation of the SAMs on the surface of Cu-Ni alloy. The SAMs change the structure of the double-electric layer and make the potential of zero charge(PZC)shift in a positive direction.In addition,The SAMs restrain the process of anodic oxidation and have well anticorrosion effect.It is in good agreement with the results by EIS and polarization curve methods.The results fi’om electrochemical measurements indicate that the corrosion resistance for Cu-Ni alloy electrode is improved by the ATA SAMs.Adsorption of the ATA SAMs is found to follow the Langmuir’s adsorption isotherm,and the adsorption mechanism is typical of chemisorption.更多还原