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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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We investigated the spectroscopic and electrochemical properties of the citrate-based CuNi solution at different solution pH and analyzed various surface properties of CuNi codeposition layer. By combining UVVisible spectroscopic data with potentiodynamic polarization curves, it could be found that the complexation of Ni<SUP>2+</SUP>-citrate pair was completed at lower solution pH than Cu<SUP>2+</SUP>-citrate pair and was affected by the coexistent Cu<SUP>2+</SUP> ions, while the complexation between Cu<SUP>2+</SUP> ions and citrate was not sensitive to the presence of Ni<SUP>2+</SUP> ions. Also, the electron transfer from cathode to Cu<SUP>2+</SUP>-citrate and Ni<SUP>2+</SUP>-citrate was hindered by strong complexation between Cu<SUP>2+</SUP>/Ni<SUP>2+</SUP> ions and citrate and so apparent codeposition current densities were reduced as the solution pH increases. CuNi codeposited layers had a higher Cu content when they were prepared at high pH solution due to the suppression of Ni deposition, and when codeposition was executed in an agitated condition due to the acceleration of mass transfer of Cu<SUP>2+</SUP> ions in the solution. Actually, solution pH had little effect on the surface morphology and deposits orientation, but greatly influenced the corrosion resistance in 3.5% NaCl solution by modifying the chemical composition of CuNi layers and so pH 3 was expected as the most suitable solution pH in the viewpoint of corrosion coatings.
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Abstract
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2. 실험 방법
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참고문헌
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - A. Turonova / 2003 / / J. Solid State Electrochem. 7 : 684 ~
2. [학술지(정기간행물)] - H. V. Venkatsetty / 1970 / / J. Electrochem. Soc. 117 : 403 ~
3. [학술지(정기간행물)] - V. Tutovan / 1971 / / Thin Solid Films 7 : 219 ~
4. [학술지(정기간행물)] - M. Zhou / 1995 / / J. Electroanal. Chem. 398 : 5 ~
5. [학술지(정기간행물)] - W. A. Badawy / 2006 / / Electrochim. Acta 51 : 4182 ~
2. [학술지(정기간행물)] - H. V. Venkatsetty / 1970 / / J. Electrochem. Soc. 117 : 403 ~
3. [학술지(정기간행물)] - V. Tutovan / 1971 / / Thin Solid Films 7 : 219 ~
4. [학술지(정기간행물)] - M. Zhou / 1995 / / J. Electroanal. Chem. 398 : 5 ~
5. [학술지(정기간행물)] - W. A. Badawy / 2006 / / Electrochim. Acta 51 : 4182 ~
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UCI(KEPA) : I410-ECN-0101-2013-581-000554851