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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 shu

Inhibition Mechanism of 2-Aminopyrimidine for Copper Corrosion

1.
Department of Chemistry and Institute of Physical Chemistry, Xiamen Univeristy, Xiamen 361005

Received Date: 6 August 1990
Available Online: 15 February 1992

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.
- 2-Aminopyrimidine; Inhibitor; Copper; Surface enbanced Raman scattering(SERS)
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