Effect of AlN additive on densification, microstructure and strength of liquid-phase sintered SiC ceramics by spark plasma sintering
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概要
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SiC ceramics were prepared from β-SiC starting powder with AlN and Y2O3 sintering additives by spark plasma sintering. Densification, microstructure and flexural strength of the liquid-phase sintered SiC ceramics were investigated. The relative density of SiC sintered bodies reached over 95% at total amount of 10 vol% AlN and Y2O3 additives and at 1900°C for 600 s in N2 at 30 MPa. When the content of AlN additive increased, the size of SiC grains decreased. The SiC body almost without the grain growth was successfully prepared using 95 mol% AlN and 5 mol% Y2O3 additives. The flexural strength of the SiC body was 1150 MPa.
- 2009-09-01
著者
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Hojo Junichi
Department of Applied Chemistry, Faculty of Engineering, Kyushu University
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Hotta Mikinori
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Hojo Junichi
Dep. Of Applied Chemistry Fac. Of Engineering Kyushu Univ.
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Hojo Junichi
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Hojo Junichi
Department Chemistry & Biochemistry, Graduate School of Engineering, Kyushu University
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