Influence of SiC whisker size on mechanical properties of reinforced alumina

The composites were fabricated by hot pressing at 1700 C under a pressure of 30 MPa for 30 min. A commercial alpha-alumina powder containing 0.5 wt% MgO was used as matrix in all composites. The mean particle size of alumina powder was 0.9 micron. The results from the mechanical behaviour tests are...

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Bibliographic Details
Published in:Journal of materials science letters 1993-01, Vol.12 (12), p.904-906
Main Authors: Krylov, A. V., Barinov, S. M., Ivanov, D. A., Mindlina, N. A., Paril k, L., Dusza, J., Lofaj, F., Rudnayova, E.
Format: Article
Language:English
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Summary:The composites were fabricated by hot pressing at 1700 C under a pressure of 30 MPa for 30 min. A commercial alpha-alumina powder containing 0.5 wt% MgO was used as matrix in all composites. The mean particle size of alumina powder was 0.9 micron. The results from the mechanical behaviour tests are presented. The mechanical properties of the composites increased with increase in whisker diameter, and materials reinforced with large whiskers displayed strength and fracture toughness which are substantially higher than for unreinforced alumina matrix. 6 refs.
ISSN:0261-8028
1573-4811
DOI:10.1007/BF00455613