生体用Ti-Nb二元系合金単結晶におけるβ相の不安定性とその基礎物性への影響  [in Japanese] β-Phase Instability and Effects on the Physical Properties in Binary Ti-Nb Biomaterial Single Crystals  [in Japanese]

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Author(s)

    • Wang Pan WANG Pan
    • 大阪大学大学院工学研究科マテリアル生産科学専攻 Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
    • 當代 光陽 TODAI Mitsuharu
    • 大阪大学大学院工学研究科マテリアル生産科学専攻 Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
    • 中野 貴由 NAKANO Takayoshi
    • 大阪大学大学院工学研究科マテリアル生産科学専攻 Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

Abstract

  The ω-phase transformation and β-phase stability in Ti-<i>x</i>Nb (28≤<i>x</i>≤40 at%) single crystals were investigated using electrical resistivity measurements, transmission electron microscopy (TEM) observations, and specific heat measurements. The crystal for <i>x</i>=28 exhibits distinct anomalous negative temperature dependence of the resistivity coefficient and thermal hysteresis accompanied by the presence of the athermal ω-phase and β-phase lattice modulation. Although the crystal for <i>x</i>=30 appears in the β-phase lattice modulation, it does not exhibit a clear negative temperature dependence of the resistivity coefficient or the athermal ω-phase. The crystal of <i>x</i>=30 also shows a relatively high absolute value of resistivity at 15 K among the crystals for 28≤<i>x</i>≤40 and a low Debye temperature in a normal conductive state. The crystal for <i>x</i>=30 that shows the lattice modulation, high resistivity, and low β-phase Debye temperature corresponds to the low stability of the β-phase. Moreover, the stability strongly depends on the Nb content in the binary Ti-Nb crystal.<br>

Journal

  • Journal of the Japan Institute of Metals and Materials

    Journal of the Japan Institute of Metals and Materials 77(7), 281-286, 2013-07-01

    The Japan Institute of Metals and Materials

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Codes

  • NII Article ID (NAID)
    10031183690
  • NII NACSIS-CAT ID (NCID)
    AN00062446
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    00214876
  • NDL Article ID
    024746521
  • NDL Call No.
    Z17-314
  • Data Source
    CJP  NDL  J-STAGE 
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