物理化学学报 >> 2008, Vol. 24 >> Issue (01): 115-120.doi: 10.3866/PKU.WHXB20080120

研究论文 上一篇    下一篇

3-氨基-1,2,4-三氮唑自组装膜对黄铜的缓蚀作用

徐群杰; 万宗跃; 印仁和; 朱律均; 曹为民; 周国定; 林昌健   

  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; 上海大学理学院化学系, 上海 200444; 厦门大学固体表面物理化学国家重点实验室, 福建 厦门 361005
  • 收稿日期:2007-06-29 修回日期:2007-09-04 发布日期:2008-01-05
  • 通讯作者: 徐群杰 E-mail:xuqunjie@shiep.edu.cn

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

XU Qun-Jie; WAN Zong-Yue; YIN Ren-He; ZHU Lu-Jun; CAO Wei-Min; ZHOU Guo-Ding; LIN Chang-Jian   

  1. Key Laboratory of State Power Corporation of China in Corrosion and Protection for Thermal Power Equipments, Department of Environment Engieering, Shanghai University of Electric Power, Shanghai 200090, P. R. China; Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, P. R. China; 3State Key Laboratory of Solid Surface Physical Chemistry, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
  • Received:2007-06-29 Revised:2007-09-04 Published:2008-01-05
  • Contact: XU Qun-Jie E-mail:xuqunjie@shiep.edu.cn

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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ATA SAMs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ATA SAMs, 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.

关键词: 黄铜, ATA, 自组装单分子膜, 缓蚀, 吸附

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 ATASAMs. Adsorption of the ATASAMs was found to followthe Langmuir’s adsorption isotherm, and the adsorption mechanismwas typical chemisorption.

Key words: Brass, ATA, SAMs, Anticorrosion, Adsorption

MSC2000: 

  • O646.6