Electrochemical Impedance Study for Selective Dissolution of a Cu-Zn Alloy
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The anodic dissolution behavior of copper and brass in an electrolyte solution of 0.5M NaCl containing0.5 mM NaHCO3 was investigated by electrochemical impedance spectroscopy. The Nyquist plots of thecopper impedance described a small loop in the high-frequency range and a large locus in the low-frequencyrange. Additionally, the features of the impedance spectrum of the brass were similar to those of the copper. This indicates that the copper-enriched layer formed on the brass surface due to the selective dissolutionof the zinc from the surface. In addition, the rest potential and the anodic polarization curve for each samplewere measured in order to discuss the selective dissolution of the zinc from the brass surface.
Abstract
The anodic dissolution behavior of copper and brass in an electrolyte solution of 0.5M NaCl containing0.5 mM NaHCO3 was investigated by electrochemical impedance spectroscopy. The Nyquist plots of thecopper impedance described a small loop in the high-frequency range and a large locus in the low-frequencyrange. Additionally, the features of the impedance spectrum of the brass were similar to those of the copper. This indicates that the copper-enriched layer formed on the brass surface due to the selective dissolutionof the zinc from the surface. In addition, the rest potential and the anodic polarization curve for each samplewere measured in order to discuss the selective dissolution of the zinc from the brass surface.
참고문헌 (18)
- H. W. Pickering, , J. Electrochem. Soc, 114, pp.698~ (1967)
- H. G. Feller, , Corros. Sci, 8, pp.259~ (1968)
- H. W. Pickering, , J. Electrochem. Soc, 115, pp.143~ (1968)
- H. W. Pickering, , J. Electrochem. Soc, 115, pp.690~ (1968)
- H. W. Pickering, , J. Electrochem. Soc, 116, pp.1492~ (1969)
- V. G. Ereneta, , Corros. Sci, 19, pp.507~ (1979)
- A. P. Pchelnikov, , Electrochim. Acta, 26, pp.591~ (1981)
- A. V. Polunin, , Electrochim. Acta, 27, pp.467~ (1982)
- M. J. Pryor, , J. Electrochem. Soc, 129, pp.2157~ (1982)
- M. J. Pryor, , J. Electrochem. Soc, 131, pp.1230~ (1984)
- S. L. F. A. Dacosta, , J. Electrochem. Soc, 140, pp.3483~ (1993)
- V. Maurice, , J. Electrochem. Soc, 150, pp.B316~ (2003)
- I. Milosev, , J. Electrochem. Soc, 150, pp.B517~ (2003)
- M. Itagaki, , Electrochim. Acta, 41, pp.1201~ (1996)
- M. Itagaki, , Corros. Sci, 38, pp.1109~ (1996)
- M. Itagaki, , Corros. Sci, 38, pp.601~ (1996)
- Y. Hoshi, , Electrochim. Acta, 56, pp.5302~ (2011)
- Y. Hoshi, , Corros. Sci, 65, pp.512~ (2012)