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Crack Deflection as a Toughening Mechanism in SiC‐Whisker‐Reinforced MoSi 2
Author(s) -
Carter David H.,
Hurley George F.
Publication year - 1987
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.1151-2916.1987.tb04992.x
Subject(s) - whisker , whiskers , materials science , deflection (physics) , toughening , composite material , composite number , reinforcement , toughness , physics , optics
Crack propagation in SiC‐whisker‐reinforced MoSi 2 was studied. In particular, the deflection angles of the cracks were examined to determine the degree to which they are affected by the whisker reinforcement. The composite studied was hot‐pressed MoSi 2 with 20 vol% vapor‐liquid‐solid β‐SiC whiskers. A substantial difference was found between the deflection angles of cracks formed in the reinforced MoSi 2 and those in a control sample with no whiskers, showing the process of crack deflection as an important, but not the only, toughening mechanism.