Microstructure and properties of Ti3SiC2/SiC nanocomposites fabricated by spark plasma sintering

Jianfeng Zhang, Ting Wu, Lianjun Wang, Wan Jiang, Lidong Chen

    Research output: Contribution to journalArticle

    50 Citations (Scopus)

    Abstract

    High dense Ti3SiC2/SiC nanocomposites with different SiC volume contents were in situ fabricated by spark plasma sintering technique. It is found from microstructural observation that SiC distributes uniformly in the composites. Ti3SiC2 is about 2-10 μm in grain size, but the average grain size of SiC is about 100 nm for the composites containing SiC from 10 to 40 vol%. With the increasing SiC volume contents, Vickers hardness, fracture toughness, thermal conductivity and electrical resistivity of the composites are improved compared to those of monolithic Ti3SiC2. Although the flexural strength of Ti3SiC2/SiC composites decrease slightly, they are higher than reported values, indicating the residual stress caused by thermal expansion mismatch is reduced. The technological implication of this work is that, it not only provides an example for the in situ reactive synthesis of nanocomposites, but also extends the possible application of the novel ternary compound Ti3SiC2 by in situ adding nanosized SiC particles.

    Original languageEnglish
    Pages (from-to)499-505
    Number of pages7
    JournalComposites Science and Technology
    Volume68
    Issue number2
    DOIs
    Publication statusPublished - 2008 Feb 1

    Keywords

    • A. TiSiC/SiC nanocomposites
    • B. Spark plasma sintering
    • C. In situ fabrication
    • D. Microstructure and properties

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Engineering(all)

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