Title

Characterization of Zirconium Diboride-Molybdenum Disilicide Ceramics

Abstract

The microstructure and properties of zirconium diboride-molybdenum disilicide ceramics were studied. Up to thirty volume percent molybdenum disilicide was incorporated into zirconium diboride. The density, microstructure, mechanical properties, and oxidation resistance were characterized as a function of composition. Molybdenum disilicide was investigated as an additive to zirconium diboride due to its ability to form a protective oxide layer that might impart improved oxidation resistance to the ceramic. The results were compared to a previous examination of zirconium diboride-silicon carbide ceramics.

Meeting Name

Advances in Ceramic Matrix Composites IX (2003: Apr. 27-30, Nashville, TN)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Hypersonic reentry vehicles; Space shuttle orbiter; Thermal protection systems (TPS); Characterization; Elastic moduli; Microstructure; Molybdenum compounds; Oxidation resistance; Scanning electron microscopy; Space shuttles; Zirconium compounds; Ceramic materials

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 American Ceramic Society (ACS), All rights reserved.


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