2-氨基嘧啶对铜的缓蚀机理

doi:10.3866/PKU.WHXB19920116

Acta Phys. -Chim. Sin. ›› 1992, Vol. 8 ›› Issue (01): 87-93.doi: 10.3866/PKU.WHXB19920116

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Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion

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

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

Abstract

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)

Lin Zhong-Hua; Wang Feng-Chun; Tian Zhong-Qun. Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion[J]. Acta Phys. -Chim. Sin. 1992, 8(01), 87-93. doi: 10.3866/PKU.WHXB19920116

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Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion

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