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Intergranular Crack‐Deflection Toughening in Silicon Carbide
Author(s) -
Faber K.T.,
Evans Anthony G.
Publication year - 1983
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.1151-2916.1983.tb10084.x
Subject(s) - materials science , deflection (physics) , silicon carbide , toughening , fracture toughness , scanning electron microscope , composite material , intergranular corrosion , grain boundary , toughness , carbide , intergranular fracture , microstructure , optics , physics
The fracture toughness of three Sic‐based materials was examined and correlated to toughening mechanisms. Crack deflection along grain boundaries in hot‐pressed Sic‐Al 2 O 3 and Sic‐ZrO 2 provided notable toughness increases compared to sintered α‐Sic, which fractures trans granularly. The existence of a crack‐deflection mecha nism was confirmed by scanning electron microscopy.