Processing of nanoceramics and nanoceramic composites: New results

B. Basu, J. H. Lee, D. Y. Kim

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

This contribution reports the fabrication of WC composites with 6 wt. % zirconia via spark plasma sintering (SPS) route. The sinterability, microstructure and mechanical properties of the SPS processed samples are compared with those fabricated by presseureless sintering. Fully dense WC composites with nano-ZrO2 reinforcement were obtained after SPS at a lower temperature of 1300°C (5 min). In contrast, high sintering temperature of 1600-1700°C is necessary to obtain fully dense WC composites via pressureless sintering. Superior hardness (21-24 GPa) is obtained with the newly developed WC- ZrO2 materials when compared to that of the WC-Co materials (15-17 GPa). Due to extremely high hardness, the WC-ZrO2 nanocomposites seem to be promising materials for wear applications.

Original languageEnglish
Pages (from-to)2293-2296
Number of pages4
JournalKey Engineering Materials
Volume264-268
Issue numberIII
Publication statusPublished - 2004
EventProceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey
Duration: 2003 Jun 292003 Jul 3

Keywords

  • Microstructure
  • Nanoceramics
  • WC, Mechanical Properties
  • Zirconia

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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