The effect of oxygen on the brittle-to-ductile transition in silicon single crystals

Youn Jeong Hong, Masaki Tanaka, Kenji Higashida

    研究成果: 書籍/レポート タイプへの寄稿会議への寄与

    抄録

    The brittle-to-ductile transition (BDT) in Czochralski (CZ) grown silicon single crystals and floating-zone (FZ) grown silicon single crystals was investigated by three-point bending. The temperature dependence of the apparent fracture toughness was measured in three different cross-head speeds. It was found that the BDT temperature in the CZ silicon crystal was higher than that in FZ silicon crystal, suggesting that the solute oxygen decreases dislocation mobility. However, the activation energies obtained from the strain rate dependence of the BDT temperatures were nearly the same in both the CZ and FZ silicon crystals, indicating that the dislocation mobility is not influenced by the solute oxygen. In this paper, the origin of the difference in the BDT temperature is discussed, focusing the role of the solute oxygen on the dislocation glide.

    本文言語英語
    ホスト出版物のタイトルPRICM7
    ページ1299-1302
    ページ数4
    DOI
    出版ステータス出版済み - 8月 17 2010
    イベント7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, オーストラリア
    継続期間: 8月 2 20108月 6 2010

    出版物シリーズ

    名前Materials Science Forum
    654-656
    ISSN(印刷版)0255-5476

    その他

    その他7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
    国/地域オーストラリア
    CityCairns, QLD
    Period8/2/108/6/10

    !!!All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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