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Effects of Composition and Environment on the Fracture of Fluoride Glasses
Author(s) -
Freiman Stephen W.,
Baker Theresa L.
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.tb05881.x
Subject(s) - fracture toughness , indentation , materials science , fluoride , chemical composition , fracture mechanics , composite material , fracture (geology) , mineralogy , metallurgy , chemistry , inorganic chemistry , organic chemistry
Indentation‐crack‐length procedures were used to determine the critical fracture toughness (K IC ) and the sensitivity to environmentally enhanced crack growth in heavy‐metal fluoride glasses of varying chemical composition. The data show that while K IC was more or less invariant with composition, some glasses were more susceptible to subcritical crack growth than others. The results are interpreted in terms of existing crack‐growth models. A technique for predicting K IC from fundamental atomic bonding and crystal‐structure data for these glasses is discussed.