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Grain Size/Microcracking Relations for Pseudobrookite Oxides
Author(s) -
CLEVELAND J. J.,
BRADT R. C.
Publication year - 1978
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.1151-2916.1978.tb16121.x
Subject(s) - thermal expansion , grain size , materials science , anisotropy , cracking , mineralogy , composite material , chemistry , physics , quantum mechanics
Grain size‐microcracking trends are examined in the three pseudobrookite oxides MgTi 2 O 5 , Fe 2 TiO 5 , and Al 2 TiO 5 . These trends are toward smaller critical grain sizes, lower elastic moduli, and lower strengths with increased thermal expansion anisotropy. Extension of an energy criterion relates the micro‐cracking transition to the inverse square of the maximum difference in single‐crystal thermal expansion coefficients, Δα max ‐2 .