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Inclusion Size and Sintering of Composite Powders
Author(s) -
Weiser Martin W.,
De Jonghe Lutgard C.
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.tb05030.x
Subject(s) - materials science , shrinkage , sintering , inert , volume fraction , composite number , particle size , ceramic , composite material , inclusion (mineral) , particle (ecology) , phase (matter) , volume (thermodynamics) , chemical engineering , mineralogy , chemistry , thermodynamics , oceanography , physics , organic chemistry , engineering , geology
Ceramic powders containing dispersed inert particulates often exhibit dramatically lower densification rates than the pure powder. This decrease results from the shrinkage incompatibilities of the matrix and the inclusion during densification. The analyses of this phenomenon all predict that the shrinkage rate is only dependent on the overall volume fraction of the inert second phase, and not on the particle size. Experiments on ZnO containing dispersed SiC particles of different size showed that the retarding effect of the second phase increases significantly with decreasing particle size, at constant SiC volume fraction.