期刊
JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE
卷 56, 期 4, 页码 406-415出版社
KOREAN CHEMICAL SOC
DOI: 10.5012/jkcs.2012.56.4.406
关键词
Alloy; Corrosion test; Molecular dynamic; Corrosion
资金
- Universiti Kebangsaan Malaysia [UKM-GGPM-NBT-037-2011]
- University of Daiyla
The corrosion inhibition of copper-nickel alloy by Ethylenediamine (EDA) and Diethylenetriamine (DETA) in 1.5M HCl has been investigated by weight loss technique at different temperatures. Maximum value of inhibitor efficiency was 75% at 35 degrees C and 0.2 M inhibitor concentration EDA, while the lower value was 4% at 35 degrees C and 0.01 M inhibitor concentration DETA. Two mathematical models were used to represent the corrosion rate data, second order polynomial model and exponential model respectively. Nonlinear regression analysis showed that the first model was better than the second model with high correlation coefficient. The reactivity of studied inhibitors was analyzed through theoretical calculations based on density functional theory (DFT). The results showed that the reactive sites were located on the nitrogen (N1, N2 and N4) atoms.
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