한국분말재료학회지 (Journal of Powder Materials)

  • 제25권1호
  • /
  • Pages.48-53
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  • 2018
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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타이타늄 합금 분말의 열적산화를 통한 TiO2 나노와이어의 합성

Synthesis of TiO2 Nanowires by Thermal Oxidation of Titanium Alloy Powder

  • 김유영 (경남과학기술대학교 기계공학과) ;
  • 조권구 (경상대학교 나노신소재융합공학과 & 그린에너지 융합연구소)
  • Kim, Yoo-Young (Department of Mechanical Engineering, Gyeongnam National University of Science and Technology) ;
  • Cho, Kwon-Koo (Department of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University)
  • 투고 : 2018.01.27
  • 심사 : 2018.02.21
  • 발행 : 2018.02.28
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초록

One-dimensional rutile $TiO_2$ is an important inorganic compound with applicability in sensors, solar cells, and Li-based batteries. However, conventional synthesis methods for $TiO_2$ nanowires are complicated and entail risks of environmental contamination. In this work, we report the growth of $TiO_2$ nanowires on a Ti alloy powder (Ti-6wt%Al-4wt%V, Ti64) using simple thermal oxidation under a limited supply of $O_2$. The optimum condition for $TiO_2$ nanowire synthesis is studied for variables including temperature, time, and pressure. $TiO_2$ nanowires of ${\sim}5{\mu}m$ in length and 100 nm in thickness are richly synthesized under the optimum condition with single-crystalline rutile phases. The formation of $TiO_2$ nanowires is greatly influenced by synthesis temperature and pressure. The synthesized $TiO_2$ nanowires are characterized using field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HR-TEM).

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