Corrosion inhibition of copper-nickel alloy: Experimental and theoretical studies

Anees A. Khadom, Aprael S. Yaro, Ahmed Y. Musa, Abu Bakar Mohamad, Abdul Amir H. Kadhum

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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 °C and 0.2 M inhibitor concentration EDA, while the lower value was 4% at 35 °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.

Original languageEnglish
Pages (from-to)406-415
Number of pages10
JournalJournal of the Korean Chemical Society
Volume56
Issue number4
DOIs
Publication statusPublished - 20 Aug 2012

Fingerprint

ethylenediamine
Copper alloys
Nickel alloys
Corrosion
Corrosion rate
Regression analysis
Density functional theory
Nitrogen
Mathematical models
Atoms
nickel copper alloy
Temperature
diethylenetriamine

Keywords

  • Alloy
  • Corrosion
  • Corrosion test
  • Molecular dynamic

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Chemistry (miscellaneous)

Cite this

Corrosion inhibition of copper-nickel alloy : Experimental and theoretical studies. / Khadom, Anees A.; Yaro, Aprael S.; Musa, Ahmed Y.; Mohamad, Abu Bakar; Kadhum, Abdul Amir H.

In: Journal of the Korean Chemical Society, Vol. 56, No. 4, 20.08.2012, p. 406-415.

Research output: Contribution to journalArticle

Khadom, Anees A. ; Yaro, Aprael S. ; Musa, Ahmed Y. ; Mohamad, Abu Bakar ; Kadhum, Abdul Amir H. / Corrosion inhibition of copper-nickel alloy : Experimental and theoretical studies. In: Journal of the Korean Chemical Society. 2012 ; Vol. 56, No. 4. pp. 406-415.
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