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Mechanical Properties of Alumina/Silicon Carbide Whisker Composites
Author(s) -
Lio Satoshi,
Watanabe Masakazu,
Matsubara Masaru,
Matsuo Yasushi
Publication year - 1989
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.1151-2916.1989.tb05995.x
Subject(s) - whisker , materials science , whiskers , composite material , fracture toughness , monocrystalline whisker , microstructure , silicon carbide , hot pressing , toughness , flexural strength
The improvement of mechanical properties of Al 2 O 3 /SiC whisker composites has been studied with emphasis on the effects of the whisker content and of the hot‐pressing temperature. Mechanical properties such as fracture toughness and fracture strength increased with increasing whisker content up to 40 wt%. In the case of the high SiC whisker content of 40 wt%, fracture toughness of the sample hot‐pressed at 1900° decreased significantly, in spite of densification, compared with one hot‐pressed at 1850°. Fracture toughness strongly depended on the microstructure, especially the distribution of SiC whiskers rather than the grain size of the Al 2 O 3 matrix.