TEM study on stability of Mg-doped γ-alumina fine particles

Michiko Kusunoki, Masumi Rokkaku, Yuichi Ikuhara, Hiroaki Yanagida

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Ultrafine spherical particles of γ-Al2O3 containing 4 at% magnesium and pure γ-Al2O3 were prepared by evaporating metal Al in air. Consequently, both particles were heated at 1400°C for 6 h in a vacuum. TEM observations showed that the Mg-doped γ-Al2O3 particles were much more stable than the pure γ-Al2O3 particles. The role of Mg atoms on the stability is discussed mainly based on the results obtained by high-resolution electron microscopy and energy dispersive X-ray spectroscopy.

    Original languageEnglish
    Pages (from-to)110-113
    Number of pages4
    JournalMaterials Transactions, JIM
    Volume39
    Issue number1
    DOIs
    Publication statusPublished - 1998 Jan

    Keywords

    • High-resolution electron microscopy
    • Magnesium
    • Phase transformation
    • Spinel
    • Thermal stability
    • Transmission electron microscopy
    • γ-AlO

    ASJC Scopus subject areas

    • Engineering(all)

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