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Temperature Dependence of Strength and Brittleness of Some Quartz Structures
Author(s) -
WESTBROOK J. H.
Publication year - 1958
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.1151-2916.1958.tb12891.x
Subject(s) - quartz , brittleness , materials science , indentation hardness , mineralogy , composite material , crystallography , geology , chemistry , microstructure
The temperature dependence of the microhardness of the quartz structures of both SiO 2 and the isomorphous compounds AlPO 4 , GeO 2 , and LiAlSiO 4 has been examined. Particular attention has been given to the effects of the high‐low inversion, which has been found to be anomalous relative to the behavior of other polymorphic transformations. The high quartz structure has been found to be much harder and more brittle than low quartz, despite their very close structural similarity.