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Effects of Particle Distribution on Transformation‐Induced Toughening in an MgO‐PSZ
Author(s) -
BHATHE.,
HOAGLAND R. G.,
MEYRICK G.
Publication year - 1984
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.1151-2916.1984.tb19704.x
Subject(s) - toughening , materials science , nucleation , fracture toughness , composite material , particle (ecology) , planar , toughness , mineralogy , fracture (geology) , crystallography , condensed matter physics , chemistry , thermodynamics , geology , physics , oceanography , computer graphics (images) , computer science
The fracture toughness of an 8.5 mol% MgO‐PSZ showed an unusual dependence on aging temperature, with a very sharp peak at about 1470°C, independent of aging time up to 6 h. The maximum toughness measured was ∼;12 MN/m 3/2 . Mi‐crostructural examination revealed that t ‐ZrO 2 precipitates nucleate homogeneously and are uniformly distributed below 1470°C. Above 1470°C they form widely spaced planar arrays, which are believed to result from elastic interactions between nuclei and growing t ‐ZrO 2 particles.