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Toughening Behavior in Sic‐Whisker‐Reinforced Alumina
Author(s) -
Becher Paul F.,
Wei George C.
Publication year - 1984
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1984.tb19694.x
Subject(s) - whisker , materials science , composite material , whiskers , fracture toughness , monocrystalline whisker , toughening , fracture (geology) , anisotropy , dispersion (optics) , toughness , physics , quantum mechanics , optics
The development of hot‐pressed Sic‐whisker‐reinforced alumina has resulted in composites with fracture toughness values ∼;8.7 MPa·m 112 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.