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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.12
- 수록면
- 71 - 81 (11page)
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초록· 키워드
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Purpose: The purpose of this study was to investigate the corrosion behaviors of dental implant alloy after microsized surface modification in electrolytes containing Mn ion.
Materials and Methods: Mn-TiO₂ coatings were prepared on the Ti-6Al-4V alloy for dental implants using a plasma electrolytic oxidation (PEO) method carried out in electrolytes containing different concentrations of Mn, namely, 0%, 5%, and 20%. Potentiodynamic method was employed to examine the corrosion behaviors, and the alternatingcurrent (AC) impedance behaviors were examined in 0.9% NaCl solution at 36.5°C±1.0°C using a potentiostat and an electrochemical impedance spectroscope. The potentiodynamic test was performed with a scanning rate of 1.667 mV s<SUP>–1</SUP> from –1,500 to 2,000 mV. A frequency range of 10<SUP>–1</SUP> to 105 Hz was used for the electrochemical impedance spectroscopy (EIS) measurements. The amplitude of the AC signal was 10 mV, and 5 points per decade were used. The morphology and structure of the samples were examined using field-emission scanning electron microscopy and thin-film X-ray diffraction. The elemental analysis was performed using energy-dispersive X-ray spectroscopy.
Result: The PEO-treated surface exhibited an irregular pore shape, and the pore size and number of the pores increased with an increase in the Mn concentration. For the PEO-treated surface, a higher corrosion current density (I<SUB>corr</SUB>) and a lower corrosion potential (E<SUB>corr</SUB>) was obtained as compared to that of the bulk surface. However, the current density in the passive regions (I<SUB>pass</SUB>) was found to be more stable for the PEO-treated surface than that of the bulk surface. As the Mn concentration increased, the capacitance values of the outer porous layer and the barrier layer decreased, and the polarization resistance of the barrier layers increased. In the case of the Mn/Ca-P coatings, the corroded surface was found to be covered with corrosion products.
Conclusion: It is confirmed that corrosion resistance and polarization resistance of PEO-treated alloy increased as Mn content increased, and PEO-treated surface showed lower current density in the passive region.
Materials and Methods: Mn-TiO₂ coatings were prepared on the Ti-6Al-4V alloy for dental implants using a plasma electrolytic oxidation (PEO) method carried out in electrolytes containing different concentrations of Mn, namely, 0%, 5%, and 20%. Potentiodynamic method was employed to examine the corrosion behaviors, and the alternatingcurrent (AC) impedance behaviors were examined in 0.9% NaCl solution at 36.5°C±1.0°C using a potentiostat and an electrochemical impedance spectroscope. The potentiodynamic test was performed with a scanning rate of 1.667 mV s<SUP>–1</SUP> from –1,500 to 2,000 mV. A frequency range of 10<SUP>–1</SUP> to 105 Hz was used for the electrochemical impedance spectroscopy (EIS) measurements. The amplitude of the AC signal was 10 mV, and 5 points per decade were used. The morphology and structure of the samples were examined using field-emission scanning electron microscopy and thin-film X-ray diffraction. The elemental analysis was performed using energy-dispersive X-ray spectroscopy.
Result: The PEO-treated surface exhibited an irregular pore shape, and the pore size and number of the pores increased with an increase in the Mn concentration. For the PEO-treated surface, a higher corrosion current density (I<SUB>corr</SUB>) and a lower corrosion potential (E<SUB>corr</SUB>) was obtained as compared to that of the bulk surface. However, the current density in the passive regions (I<SUB>pass</SUB>) was found to be more stable for the PEO-treated surface than that of the bulk surface. As the Mn concentration increased, the capacitance values of the outer porous layer and the barrier layer decreased, and the polarization resistance of the barrier layers increased. In the case of the Mn/Ca-P coatings, the corroded surface was found to be covered with corrosion products.
Conclusion: It is confirmed that corrosion resistance and polarization resistance of PEO-treated alloy increased as Mn content increased, and PEO-treated surface showed lower current density in the passive region.
목차
Introduction
Materials and Methods
Result and Discussion
Conclusion
References
참고문헌 (36)
참고문헌 신청
[학술지(정기간행물)] - Niinomi M / 2002 / Recent metallic materials for biomedical applications / Metall Mater Trans 33 : 477 ~
[단행본] - Saji VS / 2011 / Nanomedicine in health and disease / CRC Press
[학술지(정기간행물)] - Byeon IS / 2015 / Surface morphology of Zn-containing hydroxyapatite (Zn-HA) deposited electrochemically on Ti-xNb alloys / Thin Solid Films 587 : 163 ~ 168
[학술지(정기간행물)] - De Groot K / 1987 / Plasma sprayed coatings of hydroxylapatite / J Biomed Mater Res 21 : 1375 ~ 1381
[학술지(정기간행물)] - Jeong YH / 2011 / Electrochemical behavior of nano and femtosecond laser textured titanium alloy for implant surface modification / J Nanosci Nanotechnol 11 : 1581 ~ 1584
[단행본] - Saji VS / 2011 / Nanomedicine in health and disease / CRC Press
[학술지(정기간행물)] - Byeon IS / 2015 / Surface morphology of Zn-containing hydroxyapatite (Zn-HA) deposited electrochemically on Ti-xNb alloys / Thin Solid Films 587 : 163 ~ 168
[학술지(정기간행물)] - De Groot K / 1987 / Plasma sprayed coatings of hydroxylapatite / J Biomed Mater Res 21 : 1375 ~ 1381
[학술지(정기간행물)] - Jeong YH / 2011 / Electrochemical behavior of nano and femtosecond laser textured titanium alloy for implant surface modification / J Nanosci Nanotechnol 11 : 1581 ~ 1584
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