Study of grain boundary structure of ceramics by electron backscattered diffraction (EBSD) analyses

Y. Yasutomi, Y. Sakaida, Y. Sawai, Y. Ikuhara, T. Yamamoto

    Research output: Contribution to journalConference article

    Abstract

    It is important to analyze the grain boundary structure because the crystallographic orientation of one grain matches the orientation of neighboring grains during the sintering process. In the present work, the in situ silicon nitride (Si3N4) composite is analyzed by the electron backscattered diffraction (EBSD) method using field emission-scanning electron microscopy (FE-SEM: JSM-6330F, JEOL) with an orientation imaging microscopy analysis device (TSL, Inc.). The following results were obtained: 1) Si3N4 ceramics of hexagonal structure was successfully analyzed by the EBSD method. 2) Elongated Si3N4 particles grew vertically in the alignment direction of seed grains. 3) Growth direction and side planes of the elongated Si3N4 particles are influenced by alignment of seed grains and the hot pressing pressure. 4) It is important to analyze microstructure during the sintering stage in order to improve thermal conductivity and mechanical properties of in situ Si3N4 composite.

    Original languageEnglish
    Pages (from-to)501-508
    Number of pages8
    JournalCeramic Engineering and Science Proceedings
    Volume19
    Issue number3
    Publication statusPublished - 1998 Dec 1
    EventProceedings of the 1998 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A. Part 1 (of 2) - Cocoa Beach, FL, USA
    Duration: 1998 Jan 201998 Jan 24

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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