Nucleation of Crystals in Amorphous Materials

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著者

    • FUJITA Hiroshi
    • Research Institute for Science and Technology, Kinki University
    • KOMATSU Masao
    • Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
    • SAKATA Takao
    • Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
    • FUJITA Naoya
    • Osaka Prefectural Industrial Technology Research Institute

抄録

Electron microscope studies have been carried out on the nucleation process of crystals in amorphous materials with the following results: (a) The nucleus size, about φ3 nm, coincides with the critical size of crystals for amorphization in a Ni-50 at%Ti alloy. (b) The primary crystals in amorphous Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> systems are always ZrO<SUB>2</SUB> ones, and their nucleus size, about φ5 nm, is not sensitive to both annealing temperature and chemical composition. (c) Crystallization temperature takes the maximum value at the eutectic composition in Am–Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> systems.<BR>The results are discussed in terms of embedded atom clusters.

収録刊行物

  • Materials transactions, JIM  

    Materials transactions, JIM 37(7), 1350-1355, 1996-07 

    The Japan Institute of Metals

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各種コード

  • NII論文ID(NAID)
    10002450174
  • NII書誌ID(NCID)
    AA10699969
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161821
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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