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Fabrication of YAG–SiC nanocomposites by spark plasma sintering by Lian Gao; Hongzhi Wang; Hirokazu Kawaoka; Tohru Sekino; Koichi Niihara is a Materials Science article available to read on EtoBox.

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The heterogeneous precipitation method was used to prepare YAG-5 vol.% SiC powder. Hot-press sintering and spark plasma sintering were used to obtain dense sintered bodies. The present results revealed that nanoscale-sized SiC particles were well distributed within the composites, with most of the particles located within the YAG grains. The bending strength of spark-plasmasintered YAG-5 vol.% SiC nanocomposites was 565 MPa, much higher than that of monolithic YAG ceramics. The fracture mode of the YAG-5 vol.% SiC nanocomposites was transgranular. The present results indicate that YAG-5% SiC nanocomposites are good high-temperature structural materials and that spark plasma sintering is appropriate for fabricating high-performance YAG-5 vol.% SiC nanocomposites with a fine microstructure because the method involves a low sintering temperature.

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Author

Lian Gao; Hongzhi Wang; Hirokazu Kawaoka; Tohru Sekino; Koichi Niihara

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0955-2219)

Published

2002

Language

EN

Field

Materials Science (Physical Sciences)