Synthesis and thermal stability of nanocrystalline chromium disilicide

Jianhua Ma, Yunle Gu, Liang Shi, Luyang Chen, Zeheng Yang, Yitai Qian

    研究成果: Article査読

    34 被引用数 (Scopus)

    抄録

    Nanocrystalline chromium disilicide was synthesized by co-reducing anhydrous chromium trichloride and sodium fluorosilicate with metallic potassium at 650 °C in an autoclave. X-ray powder diffraction pattern indicated that the product was hexagonal CrSi2. Transmission electron microscope images showed that the sample consisted of particles with the diameters of 20-50 nm and an average diameter of about 35 nm. TGA and DTA indicated that the oxidation of CrSi2 began to proceed at 700 °C in air, and only about 8.6wt.% of the sample was oxidized in the surfaces of the particles below 1000 °C. It had high thermal oxidation stability due to the formed protective layer.

    本文言語English
    ページ(範囲)176-179
    ページ数4
    ジャーナルJournal of Alloys and Compounds
    376
    1-2
    DOI
    出版ステータスPublished - 2004 8月 11

    ASJC Scopus subject areas

    • 材料力学
    • 機械工学
    • 金属および合金
    • 材料化学

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