Precipitation of MgO·nAl2O3 in Mg-doped α-Al2O3 under electron irradiation

Kenji Kaneko, Takeharu Kato, Mikio Kitayama, Yoshitsugu Tomokiyo

    研究成果: Contribution to journalArticle査読

    5 被引用数 (Scopus)

    抄録

    A number of nanoscale precipitates with random orientations were produced by electron irradiation of polycrystalline Mg-doped α-Al2O3. The precipitation behavior and microstructural changes were observed using in situ high-resolution transmission electron microscopy. A ring pattern corresponding to a polycrystalline fee structure was obtained from the region of these precipitates by selected-area diffraction, and they were identified as nonstoichiometric MgO·nAl2O3. It is believed that Al2O3 with MgO(ss) and/or MgO at the grain boundaries is effectively stabilized by the electron irradiation process, forming the fundamental structure of MgO·nAl2O3. The average size of the precipitates is about 10 nm.

    本文言語英語
    ページ(範囲)161-168
    ページ数8
    ジャーナルJournal of the American Ceramic Society
    86
    1
    DOI
    出版ステータス出版済み - 1 2003

    All Science Journal Classification (ASJC) codes

    • セラミックおよび複合材料
    • 材料化学

    フィンガープリント

    「Precipitation of MgO·nAl<sub>2</sub>O<sub>3</sub> in Mg-doped α-Al<sub>2</sub>O<sub>3</sub> under electron irradiation」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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