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Processing and Properties of Particulate Composites from Coated Powders
Author(s) -
Mitchell Tyrone D.,
Jonghe Lutgard C.
Publication year - 1995
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.1151-2916.1995.tb08383.x
Subject(s) - materials science , whisker , sintering , composite material , whiskers , silicon carbide , composite number , porosity , suspension (topology) , particulates , consolidation (business) , calcination , ecology , biochemistry , chemistry , mathematics , accounting , homotopy , pure mathematics , business , biology , catalysis
A method is described for sintering of highly loaded (≤20 vol%) alumina matrix/silicon carbide whisker or platelet composites to closed porosity. The method uses controlled heterogeneous precipitation in a suspension of whiskers or platelets. The suspension‐coated particles are calcined to produce a free‐flowing composite powder which can be hot‐pressed or free‐sintered to high density. The results of consolidation and mechanical property testing are reported.