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金属学报  2008, Vol. 44 Issue (2): 203-208     
  论文 本期目录 | 过刊浏览 |
3--氨基--1, 2, 4--三氮唑自组装膜对 Cu--Ni合金缓蚀作用及吸附机理研究
万宗跃 张 利 印仁和 徐群杰 陈 浩 朱律均 周国定
上海大学理学院化学系; 上海 200444
Inhibition Action and Mechanism of the Self-assembled Monolayers of 3-amino-1,2,4-triazole on Cu-Ni Alloy
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上海大学
引用本文:

万宗跃; 张利; 印仁和; 徐群杰; 陈; 浩; 朱律均; 周国定 . 3--氨基--1, 2, 4--三氮唑自组装膜对 Cu--Ni合金缓蚀作用及吸附机理研究[J]. 金属学报, 2008, 44(2): 203-208 .
, , , , , , , . Inhibition Action and Mechanism of the Self-assembled Monolayers of 3-amino-1,2,4-triazole on Cu-Ni Alloy[J]. Acta Metall Sin, 2008, 44(2): 203-208 .

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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ATA SAMs,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.
关键词 Cu-Ni合金ATASAMs缓蚀吸附    
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 from 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.
Key wordsCu-Ni alloy    ATA    The SAMs    Anticorrosion    Adsorption
收稿日期: 2007-07-03     
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