Preparation of Ceramic Powders Using Supercritical Nonaqueous Solvents

Tsugio Sato

    研究成果: Article査読

    抄録

    The survey deals with the preparation of ceramic powders by crystallizing in nonaqueous solvents and supercritical drying. The sintering behaviors and mechanical properties of sintered bodies are very much sensitive to the crystallizing conditions, since hard agglomerates formed when the precipitated gels were crystallized by normal calcination in air whereas soft agglomerates formed when they were crystallized in water or organic solvents. CeO2-ZrO2 powders crystallized in methanol and water at 250°C were sintered to full theoretical density at 1100° and 1400°C, respectively, whereas that crystallized by calcination in air at 450°C was sintered to only 95.2% of theoretical density even at 1500° C. Sintered bodies fabricated using the powders crystallized and dried using supercritical methanol possessed excellent mechanical properties.

    本文言語English
    ページ(範囲)1203-1208
    ページ数6
    ジャーナルjournal of the japan society of powder and powder metallurgy
    41
    10
    DOI
    出版ステータスPublished - 1994 2 1

    ASJC Scopus subject areas

    • 機械工学
    • 産業および生産工学
    • 金属および合金
    • 材料化学

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