TEM/EELS characterization of a sintered polycrystalline silicon carbide fiber

    Authors

    H. Tenailleau; X. Bourrat; R. Naslain; R. E. Tressler;L. A. Giannuzzi

    Comments

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    Abbreviated Journal Title

    J. Am. Ceram. Soc.

    Keywords

    REACTION-MECHANISMS; CERAMIC FIBERS; HEAT-TREATMENT; SIC FIBERS; NICALON; RADIATION; Materials Science, Ceramics

    Abstract

    A sintered, polycrystalline SiC fiber has been characterized by TEM and EELS. The fibers consist primarily of alpha-SiC (6H-polytype) with a mean grain size on the order of approximately 1 mu m. Poorly organized turbostratic carbon is located within porous regions between some grain boundaries and triple junctions of the SiC. In addition, 100 nm spherical boron carbide precipitates are observed intra-granularly within the SiC grains. These precipitates have a rhombohedral crystal structure with an approximate stoichiometry of B4C.

    Journal Title

    Journal of the American Ceramic Society

    Volume

    81

    Issue/Number

    8

    Publication Date

    1-1-1998

    Document Type

    Article

    Language

    English

    First Page

    2037

    Last Page

    2044

    WOS Identifier

    WOS:000075368600006

    ISSN

    0002-7820

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