物理化学学报 >> 1992, Vol. 8 >> Issue (01): 87-93.doi: 10.3866/PKU.WHXB19920116

研究论文 上一篇    下一篇

2-氨基嘧啶对铜的缓蚀机理

林中华; 王逢春; 田中群   

  1. 厦门大学化学系 物理化学研究所,厦门 361005
  • 收稿日期:1990-08-06 修回日期:1991-06-10 发布日期:1992-02-15
  • 通讯作者: 林中华

Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion

Lin Zhong-Hua; Wang Feng-Chun; Tian Zhong-Qun   

  1. Department of Chemistry and Institute of Physical Chemistry, Xiamen Univeristy, Xiamen 361005
  • Received:1990-08-06 Revised:1991-06-10 Published:1992-02-15
  • Contact: Lin Zhong-Hua

摘要: 利用动电位极化曲线、线性极化、X射线光电子能谱(XPS)、X射线俄歇能谱(X-AES)和表面增强拉曼散射(SERS)研究2-氨基嘧啶(2-AP)对金属铜的缓蚀作用。结果表明: 在含Cl~-离子的酸性介质中, 2-AP是铜的有效缓蚀剂; 随着介质pH值的增加, 2-AP的缓蚀能力降低。2-AP缓蚀能力随pH值明显变化的原因在于只有在酸性介质中, 质子化了的2-AP分子、Cl~-离子和铜表面原子(或离子)才可能形成保护作用强的多聚配合物膜。

关键词: 2-氨基嘧啶, 缓蚀剂, 铜, 表面增强拉曼散射

Abstract: The inhibition mechanism of 2-aminopyrimidine (2-AP) for copper corrosion in chloride solutions with various pH values has been investigated using XPS, X-AES, SERS and electrochemical techniques. The results showed that the 2-AP is a better inhibitor for the copper corrosion in acidic solutions, less effective in neutral solutions and completely ineffective in basic solutions. In acidic solutions a protective polymeric complex film consisting of 2-AP, Cl~- and surface copper atoms(or cations) on the copper surface, which is stable in a wide potential range, is responsible for the corrosion inhibition of copper.

Key words: 2-Aminopyrimidine, Inhibitor, Copper, Surface enbanced Raman scattering(SERS)