In this work, ZrC-based composites reinforced with SiC particles were processed using the hot-pressing route. The influence of SiC content on the microstructure and mechanical properties of the hot-pressed composites was investigated. In all composites with different SiC contents, the highest relative density was obtained for ZrC-based composite containing 20 vol% SiC, having a value of 97 per cent. The flexural strength of ZrC-based composites increased modestly from 390 to 452 MPa as the SiC content increased from 10 to 20 vol%. The increase in strength was attributed to a decrease in grain size and improvement of the relative density. But the strength did not show great variation when the content of the SiC particles increased to 30 vol%, which may be because of the inhomogeneous microstructure and the low relative density. In contrast, toughness and hardness did not vary significantly with SiC content.


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    Title :

    Fabrication of hot-pressed ZrC-based composites


    Contributors:
    Ma, B (author) / Zhang, X (author) / Han, J (author) / Han, W (author)


    Publication date :

    2009-08-01


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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