【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,以其在黄铜表面制备了自组装单分子膜(SAMs),用电化学方法研究ATASAMs对黄铜的缓蚀作用及其吸附行为.结果表明,ATA分子易在黄铜表面形成稳定的ATASAMs,SAMs抑制了黄铜的阳极氧化过程,改变了电极表面的双电层结构,固/液界面双电层电容明显降低,有良好的缓蚀效果.研究结果还表明,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 (SAMs) of 3-amino-1,2, 4-triazole (ATA) on the surface of brass had been investigated by electrochemical method, as well as its adsorption behavior. The results indicated that ATA was liable to interact with brass forming SAMs on the surface of brass. The SAMs changed the structure of the electric-double layer. The SAMs restrained the process of anodic oxidation and had well anticorrosion effect. It was in good agreement with the results by EIS and polarization curve methods. The results from electrochemical measurements indicated that the corrosion resistance for brass electrode was improved by the ATA SAMs. Adsorption of the ATA SAMs was found to follow the Langmuir′s adsorption isotherm, and the adsorption mechanism was typical chemisorption.更多还原