Toughening Behavior in Sic-Whisker-Reinforced Alumina

The development of hot‐pressed Sic‐whisker‐reinforced alumina has resulted in composites with fracture toughness values ∼;8.7 MPa·m112 at 20 vol% SiC. Whisker orientation during processing leads to anisotropy in both fracture toughness and fracture strength. Fracture strengths are also limited by th...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1984-12, Vol.67 (12), p.C-267-C-269
Main Authors: Becher, Paul F., Wei, George C.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Miscellaneous
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Summary:The development of hot‐pressed Sic‐whisker‐reinforced alumina has resulted in composites with fracture toughness values ∼;8.7 MPa·m112 at 20 vol% SiC. Whisker orientation during processing leads to anisotropy in both fracture toughness and fracture strength. Fracture strengths are also limited by the ability to disperse the Sic whiskers; however, use of both fine alumina powders and ultrasonic dispersion techniques yields strengths ∼;800 MPa.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1984.tb19694.x