Fabrication and characterization of SiC-AIN alloys |
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Authors: | William Rafaniello Kurn Cho Anil V. Virkar |
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Affiliation: | (1) Department of Materials Science and Engineering, University of Utah, 84112 Salt Lake City, Utah, USA |
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Abstract: | SiC-AIN alloys were prepared by the carbothermal reduction of silica and alumina, derived from an intimate mixture of silica, aluminium chloride and starch. The resulting single-phase SiC-AIN powder was hot-pressed without additives to a high density. The dense bodies had a fine-grained uniform microstructure. The Young's elastic modulus, microhardness, fracture toughness, thermal expansion and thermal conductivity were measured as functions of composition. The creep behaviour of the SiC-AIN alloy was compared with that of silicon carbide. |
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