引用本文:
林中华, 王逢春, 田中群. 2-氨基嘧啶对铜的缓蚀机理[J]. 物理化学学报,
1992, 8(01): 87-93.
doi:
10.3866/PKU.WHXB19920116
Citation: Lin Zhong-Hua, Wang Feng-Chun, Tian Zhong-Qun. Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion[J]. Acta Physico-Chimica Sinica, 1992, 8(01): 87-93. doi: 10.3866/PKU.WHXB19920116
Citation: Lin Zhong-Hua, Wang Feng-Chun, Tian Zhong-Qun. Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion[J]. Acta Physico-Chimica Sinica, 1992, 8(01): 87-93. doi: 10.3866/PKU.WHXB19920116
2-氨基嘧啶对铜的缓蚀机理
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。
English
Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion
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.
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