Reduction mechanism of surface oxide films and characterization of formations on pulse electric-current sintered Al-Mg alloy powders

Guoqiang Xie, Osamu Ohashi, Minghui Song, Kazutaka Mitsuishi, Kazuo Furuya

    研究成果: Article査読

    35 被引用数 (Scopus)

    抄録

    The microstructure of interfaces between powder particles in Al-Mg alloy specimens sintered by pulse electric-current sintering (PECS) process was characterized using high resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDS). The crystalline precipitates with nano-size in the interface were observed in all of Al-Mg alloy specimens. The composition was determined to be MgAl 2 O 4 or MgO, or both of them, which depended on Mg content in alloy powder and sintering temperature. The precipitates were suggested to contribute to reduction reaction of Mg with oxide films originally covered at powder particles surface.

    本文言語English
    ページ(範囲)102-106
    ページ数5
    ジャーナルApplied Surface Science
    241
    1-2 SPEC. ISS.
    DOI
    出版ステータスPublished - 2005 2月 28

    ASJC Scopus subject areas

    • 化学 (全般)
    • 凝縮系物理学
    • 物理学および天文学(全般)
    • 表面および界面
    • 表面、皮膜および薄膜

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