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Toughening by Stress‐Induced Microcracking in Two‐Phase Ceramics
Author(s) -
Faber Katherine T.,
Iwagoshi Thawi,
Ghosh Asish
Publication year - 1988
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.1151-2916.1988.tb06419.x
Subject(s) - borosilicate glass , materials science , composite material , aluminosilicate , ceramic , toughening , stress (linguistics) , phase (matter) , fracture toughness , toughness , composite number , biochemistry , chemistry , linguistics , philosophy , organic chemistry , catalysis
Two glass/alumina composites were examined as potential systems for stress‐induced microcrack toughening. A borosilicate glass/alumina material having a thermal mismatch strain of approximately 0.8% demonstrated toughness up to twice that of an aluminosilicate glass/alumina composite and other reported glass/alumina composites. High‐sensitivity density measurements confirmed a density reduction on application of a stress in the borosilicate glass/alumina system, providing indirect evidence for stress‐induced microcracking.