Effect of pyrolysis temperature on the electric conductivity of polymer-derived silicoboron carbonitride

    Authors

    Y. H. Chen; X. P. Yang; Y. J. Cao;L. A. An

    Comments

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    Abbreviated Journal Title

    J. Eur. Ceram. Soc.

    Keywords

    Precursors-organic; Electric conductivity; Activation energy; Carbon; SiBCN ceramics; CERAMICS; TRANSPORT; BEHAVIOR; Materials Science, Ceramics

    Abstract

    The electric conductivity of polymer-derived SiBCNs pyrolyzed at different temperatures was studied. We showed that the boron impeded the graphitization of the free-carbon phase in the SiBCN, leading to a higher characteristic temperature and activation energy as compared to the SiCN. Such an impeding effect is due to the interaction between h-BN and graphite phase. We also provided a credible evidence to show that the increase in the electric conductivity of the SiBCN with pyrolysis temperature is likely due to the increase in the conductivity of the free-carbon phase. (C) 2014 Elsevier Ltd. All rights reserved.

    Journal Title

    Journal of the European Ceramic Society

    Volume

    34

    Issue/Number

    10

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    2163

    Last Page

    2167

    WOS Identifier

    WOS:000336352500004

    ISSN

    0955-2219

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