Combined spectroscopic and thermodynamic investigation of nextel-720 fiber/alumina ceramic-matrix composite in air and water vapor at 1100 degrees C

    Authors

    S. Wannaparhun;S. Seal

    Comments

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    Abbreviated Journal Title

    J. Am. Ceram. Soc.

    Keywords

    X-RAY PHOTOELECTRON; ALUMINA; Materials Science, Ceramics

    Abstract

    The high-temperature performance of a Nextel-720 fiber/Al2O3 composite in air and water vapor at 1100degreesC was investigated using X-ray photoelectron spectroscopy (XPS) and thermodynamic calculations. In the presence of water vapor, the formation of volatile Si(OH)(4) was responsible for the loss of mullite phase in the fiber of the ceramic-matrix composite (CMC). XPS analysis revealed the formation of surface aluminosilicates for the water-vapor-exposed CMC for 1000 h.

    Journal Title

    Journal of the American Ceramic Society

    Volume

    86

    Issue/Number

    9

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    1628

    Last Page

    1630

    WOS Identifier

    WOS:000185367300036

    ISSN

    0002-7820

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