Inhibition of copper corrosion in 3.0% NaCl solution by N-phenyl-1,4-phenylenediamine
SCIE
SCOPUS
- Title
- Inhibition of copper corrosion in 3.0% NaCl solution by N-phenyl-1,4-phenylenediamine
- Authors
- Sherif, EM; Park, SM
- Date Issued
- 2005-01
- Publisher
- ELECTROCHEMICAL SOC INC
- Abstract
- Inhibition of copper corrosion by N-phenyl-1,4-phenylenediamine (NPPD) has been investigated in deaerated, aerated, and oxygenated aqueous 3.0% NaCl solutions using potentiodynamic polarization, electrochemical impedance spectroscopy, weight loss, infrared and UV-visible absorption spectroscopic, scanning electron microscopic (SEM), and energy-dispersive X-ray (EDX) measurements. Potentiodynamic polarization measurements showed that the presence of NPPD significantly decreases cathodic, anodic, and corrosion currents in these solutions. Impedance measurements indicated that the charge-transfer resistances increase upon increasing the NPPD concentration. The inhibition efficiency of 1.0 mM NPPD obtained by weight-loss measurements is about 90%, increasing to about 96% at its concentration of 5.0 mM. Fourier transform infrared, UV-visible, SEM, and EDX measurements revealed that NPPD is adsorbed on the copper surface at open-circuit potentials, preventing copper from being corroded by forming a protective layer on its surface. All these results showed that corrosion of copper decreases in the order of oxygenated > aerated > deaerated solutions, and NPPD is a good mixed-type inhibitor for copper corrosion with its inhibition efficiency in the order of oxygenated > aerated > deaerated solutions. (c) 2005 The Electrochemical Society.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11149
- DOI
- 10.1149/1.2018254
- ISSN
- 0013-4651
- Article Type
- Article
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 152, no. 10, page. B428 - B433, 2005-01
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