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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.6
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- 10 - 21 (12page)
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Purpose: The purpose of this study was to investigate the electrochemical characteristics of nanotubular Ti-25NbxZr ternary alloys for dental implant materials.
Materials and Methods: Ti-25Nb-xZr alloys with different Zr contents (0, 3, 7, and 15 wt.%) were manufactured using commercially pure titanium (CP-Ti), niobium (Nb), and zirconium (Zr) (99.95 wt.% purity). The alloys were prepared by arc melting in argon (Ar) atmosphere. The Ti-25Nb-xZr alloys were homogenized in Ar atmosphere at 1,000°C for 12 hours followed by quenching into ice water. The microstructure of the Ti-25Nb-xZr alloys was examined by a field emission scanning electron microscope. The phases in the alloys were identified by an X-ray diffractometer. The chemical composition of the nanotube-formed surfaces was determined by energy-dispersive X-ray spectroscopy. Selforganized TiO₂ was prepared by electrochemical oxidation of the samples in a 1.0 M H₃PO₄+0.8 wt.% NaF electrolyte. The anodization potential was 30 V and time was 1 hour by DC supplier. Surface wettability was evaluated for both the metallographically polished and nanotube-formed surfaces using a contact-angle goniometer. The corrosion properties of the specimens were investigated using a 0.9 wt.% aqueous solution of NaCl at 36°C±5°C using a potentiodynamic polarization test.
Result: Needle-like structure of Ti-25Nb-xZr alloys was transform to equiaxed structure as Zr content increased. Nanotube formed on Ti-25Nb-xZr alloys show two sizes of nanotube structure. The diameters of the large tubes decreased and small tubes increased as Zr content increased. The lower contact angles for nanotube formed Ti-25NbxZr alloys surfaces showed compare to non-nanotube formed surface. The corrosion resistance of alloy increased as Zr content increased, and nanotube formed surface showed longer the passive regions compared to non-treatment surface.
Conclusion: It is confirmed that corrosion resistance of alloy increased as Zr content increased, and nanotube formed surface has longer passive region compared to without treatment surface.
Materials and Methods: Ti-25Nb-xZr alloys with different Zr contents (0, 3, 7, and 15 wt.%) were manufactured using commercially pure titanium (CP-Ti), niobium (Nb), and zirconium (Zr) (99.95 wt.% purity). The alloys were prepared by arc melting in argon (Ar) atmosphere. The Ti-25Nb-xZr alloys were homogenized in Ar atmosphere at 1,000°C for 12 hours followed by quenching into ice water. The microstructure of the Ti-25Nb-xZr alloys was examined by a field emission scanning electron microscope. The phases in the alloys were identified by an X-ray diffractometer. The chemical composition of the nanotube-formed surfaces was determined by energy-dispersive X-ray spectroscopy. Selforganized TiO₂ was prepared by electrochemical oxidation of the samples in a 1.0 M H₃PO₄+0.8 wt.% NaF electrolyte. The anodization potential was 30 V and time was 1 hour by DC supplier. Surface wettability was evaluated for both the metallographically polished and nanotube-formed surfaces using a contact-angle goniometer. The corrosion properties of the specimens were investigated using a 0.9 wt.% aqueous solution of NaCl at 36°C±5°C using a potentiodynamic polarization test.
Result: Needle-like structure of Ti-25Nb-xZr alloys was transform to equiaxed structure as Zr content increased. Nanotube formed on Ti-25Nb-xZr alloys show two sizes of nanotube structure. The diameters of the large tubes decreased and small tubes increased as Zr content increased. The lower contact angles for nanotube formed Ti-25NbxZr alloys surfaces showed compare to non-nanotube formed surface. The corrosion resistance of alloy increased as Zr content increased, and nanotube formed surface showed longer the passive regions compared to non-treatment surface.
Conclusion: It is confirmed that corrosion resistance of alloy increased as Zr content increased, and nanotube formed surface has longer passive region compared to without treatment surface.
목차
Introduction
Materials and Methods
Result and Discussion
Conclusion
References
참고문헌 (26)
참고문헌 신청
[학술지(정기간행물)] - Noli F / 2009 / Enhancement of the corrosion resistance of a Ti-based alloy by ion beam deposition methods / Methods Phys Res B 267 : 1670 ~ 1674
[학술지(정기간행물)] - Geetha M / 2004 / Effect of thermomechanical processing on evolution of various phases in Ti-Nb-Zr alloys / J Alloys Compd 384 : 131 ~ 144
[학술지(정기간행물)] - Jeong YH / 2012 / Electrochemical and surface behavior of hydyroxyapatite/Ti film on nanotubular Ti-35Nb-xZr alloys / Appl Surf Sci 258 : 2129 ~ 2136
[학술지(정기간행물)] - Mjöberg B / 1997 / Aluminum, Alzheimer's disease and bone fragility / Acta Orthop Scand 68 : 511 ~ 514
[학술지(정기간행물)] - Beyersmann D / 2008 / Carcinogenic metal compounds: recent insight into molecular and cellular mechanisms / Arch Toxicol 82 : 493 ~ 512
[학술지(정기간행물)] - Geetha M / 2004 / Effect of thermomechanical processing on evolution of various phases in Ti-Nb-Zr alloys / J Alloys Compd 384 : 131 ~ 144
[학술지(정기간행물)] - Jeong YH / 2012 / Electrochemical and surface behavior of hydyroxyapatite/Ti film on nanotubular Ti-35Nb-xZr alloys / Appl Surf Sci 258 : 2129 ~ 2136
[학술지(정기간행물)] - Mjöberg B / 1997 / Aluminum, Alzheimer's disease and bone fragility / Acta Orthop Scand 68 : 511 ~ 514
[학술지(정기간행물)] - Beyersmann D / 2008 / Carcinogenic metal compounds: recent insight into molecular and cellular mechanisms / Arch Toxicol 82 : 493 ~ 512
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