Title

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

Authors

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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