Processing and Properties of Particulate Composites from Coated Powders |
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| Authors: | Tyrone D Mitchell Jr Lutgard C De Jonghe |
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| Affiliation: | Center for Advanced Materials, Materials Sciences Division, Lawrence Berkeley Laboratory, and Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720 |
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| Abstract: | 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. |
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