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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Ceramic oxide layers successfully were formed on the surface of cast Al alloys with high Si contents using plasma electrolytic oxidation (PEO) process in electrolytes containing Na₂SiO₃, NaOH, and additives. The microstructure of the oxide layers was systematically analyzed using scanning electron microscopy (SEM), cross-sectional transmission electron microscopy (TEM), X-ray diffraction patterns (XRD), and energy X-ray dispersive spectroscopy (EDS). XRD analysis indicated that the PEO untreated high-silicon Al alloys (i.e., 17.1 and 11.7 wt.% Si) consist of Al, Si and Al₂Cu phases whereas Al₂Cu phase selectively disappeared after PEO treatment. PEO process yielded an amorphous oxide layer with few second phases including γ-Al₂O₃ and Fe-rich phases. The corrosion behaviors of high-silicon Al alloys treated by PEO process were investigated using electrochemical impedance spectroscopy (EIS) and other electrochemical techniques (i.e., open circuit potential and polarization curve). Electroanalytical studies indicated that high-silicon Al alloys treated by PEO process have greater corrosion resistance than high-silicon alloys untreated by PEO process.
목차
Abstract
1. Introduction
2. Experimental
3. Results and discussion
4. Conclusions
References
참고문헌 (33)
참고문헌 신청
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E. Matykina, R. Arrabal, F. Monfort, P. Skeldon, G.E. Thompson, Incorporation of zirconia into coatings formed by DC plasma electrolytic oxidation of aluminium in nanoparticle suspensions, Appl. Surf. Sci., 255 (2008) 2830-2839.
R. Arrabal, E. Matykina, F. Viejo, P. Skeldon, G.E. Thompson, M.C. Merino, AC plasma electrolytic oxidation of magnesium with zirconia nanoparticles, Appl. Surf. Sci., 254 (2008) 6937-6942.
E. Matykina, A. Berkani, P. Skeldon, G.E. Thompson, Real-time imaging of coating growth during plasma electrolytic oxidation of titanium, Electrochim. Acta, 53 (2007) 1987-1994.
I. S. Park, T. G. Woo, W. Y. Jeon, H. H. Park, M. H. Lee, T. S. Bae, K. W. Seol, Surface characteristics of titanium anodized in the four different types of electrolyte, Electrochim. Acta, 53 (2007) 863-870.
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