Abstract
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.
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