引用本文:
徐群杰, 万宗跃, 印仁和, 朱律均, 曹为民, 周国定, 林昌健. 3-氨基-1,2,4-三氮唑自组装膜对黄铜的缓蚀作用[J]. 物理化学学报,
2008, 24(01): 115-120.
doi:
10.3866/PKU.WHXB20080120
Citation: XU Qun-Jie, WAN Zong-Yue, YIN Ren-He, ZHU Lu-Jun, CAO Wei-Min, ZHOU Guo-Ding, LIN Chang-Jian. Inhibition Action of the Self-Assembled Monolayers of 3-Amino-1,2,4-triazole on Brass[J]. Acta Physico-Chimica Sinica, 2008, 24(01): 115-120. doi: 10.3866/PKU.WHXB20080120
Citation: XU Qun-Jie, WAN Zong-Yue, YIN Ren-He, ZHU Lu-Jun, CAO Wei-Min, ZHOU Guo-Ding, LIN Chang-Jian. Inhibition Action of the Self-Assembled Monolayers of 3-Amino-1,2,4-triazole on Brass[J]. Acta Physico-Chimica Sinica, 2008, 24(01): 115-120. doi: 10.3866/PKU.WHXB20080120
3-氨基-1,2,4-三氮唑自组装膜对黄铜的缓蚀作用
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.
English
Inhibition Action of the Self-Assembled Monolayers of 3-Amino-1,2,4-triazole on Brass
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 od 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.
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Key words:
- Brass; ATA; SAMs; Anticorrosion; Adsorption
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