生体用純チタンおよびチタン合金の組織と弾性率

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タイトル別名
  • Elastic modulus and structure of pure titanium and titanium alloy

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type:論文(Article)

It is desirable that metallic implant materials consist of non-cytotoxic elements and have similar mechanical properties, especially young's modulus, with human bone. Titanium, niobium and chromium are recognized as non-or minimal-cytotoxic elements. However, young's modulus of titanium (106GPa), niobium (103GPa) and chromium (245GPa) is much highe than taht of human bone (10GPa～30GPa). Young's modulus of pure titamium, Ti-Nb and Ti-Cr alloys is investigated in relation to their microstructure. Young's modulus of pure titanium produced by powder metallurgy, changing parameters of mechanical grinding and sintering condition, decreases linearly from 110GPa to 27GPa with increasing amounts of pore. It is known that young's modulus of meta-stable beta titanium alloy containing beta-isomorphous alloy elements of niobium or tantalum is low, though it depends on amounts of alloy elements. Ti-Nb alloy and also Ti-Cr alloy produced by powder metallurgy in this experiment showed lower young's modulus than oure titanium. Thus, beta-eutectoid stabilized element of chromium was found to have the similar effect on the decrease of young's modulus of titanium alloy with beta-isomorphous element of niobium.

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詳細情報 詳細情報について

  • CRID
    1050846638328490496
  • NII論文ID
    110006448366
  • NII書誌ID
    AN10590360
  • ISSN
    1342792X
  • Web Site
    http://id.nii.ac.jp/1714/00000138/
  • 本文言語コード
    ja
  • 資料種別
    departmental bulletin paper
  • データソース種別
    • IRDB
    • CiNii Articles

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