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Updated: Feb 10, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
HIGH-TEMPERATURE PERFORMANCE AND RETAINED STRENGTH OF AN OXIDE-OXIDE CONTINUOUS FIBRE CERAMIC COMPOSITE
1Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600.
Abstract:
Oxide fibre-reinforced / oxide matrix ceramic composites have the potential of resisting high-temperature degradation in the increasingly aggressive environments of emerging applications for this still-evolving class of materials. An alumina (Nextel™) fibre-reinforced / alumina matrix composite with an oxidation-resistant boron nitride/silicon carbide interphase was investigated for its high temperature performance. Room-temperature tensile tests of specimens which had been exposed to 600, 800, 1000 and 1200°C temperatures in ambient air for 10 and 100 h revealed time- and temperature-dependent retained strength behaviour. The effects of residual stress state and degradation of the interphase material on resulting mechanical performance were evaluated using load-unload tensile tests. Impulse resonance tests for elastic modulus at temperature, thermogravimetric/differential thermal analyses and post-test fractography were used to substantiate the micro mechanics of the observed tensile behavior.
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