Fabrication of YAG-SiC nanocomposites by spark plasma sintering

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

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

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-plasma-sintered 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.

Original languageEnglish
Pages (from-to)785-789
Number of pages5
JournalJournal of the European Ceramic Society
Volume22
Issue number5
DOIs
Publication statusPublished - 2002 May

Keywords

  • Mechanical properties
  • Nanocomposites
  • Sintering
  • Spark plasma sintering
  • YAG-SiC

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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