3-氨基-1,2,4-三氮唑自组装膜对黄铜的缓蚀作用  

Inhibition Action of the Self-Assembled Monolayers of 3-Amino-1,2,4-triazole on Brass

作　　者：徐群杰[1] 万宗跃[1,2] 印仁和[2] 朱律均[1,2] 曹为民[2] 周国定[1] 林昌健[3] 

机构地区：[1]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,上海200090 [2]上海大学理学院化学系,上海200444 [3]厦门大学固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《物理化学学报》2008年第1期115-120,共6页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20406009、50371053);上海市曙光计划(04SG55);上海市教委重点项目(06ZZ67);上海市科技攻关计划(062312045);厦门大学固体表面物理化学国家重点实验室开放课题(200512);上海市重点学科建设项目(P1304)资助

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.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.

关 键 词：黄铜 ATA 自组装单分子膜 缓蚀 吸附 

分 类 号：TG174.42[金属学及工艺—金属表面处理]