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Properties of zirconia - Tungsten carbide composites produced by hot pressing

  • N. Ünal*
  • , F. Kern
  • , M. L. Övecoglu
  • , R. Gadow
  • *Corresponding author for this work
  • University of Stuttgart
  • Istanbul Technical University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Citations (Scopus)

Abstract

2-3.5 mol% Y2O3 stabilized submicron ZrO2 (Y-TZP) based composites with an addition of 20, 32 and 40vol% WC particle reinforcement were produced by hot-pressing at sintering temperatures of 1450 °C and 1550 °C. Mechanical and structural properties were observed according to WC vol%, stabilizer content and sintering temperature. Phase transformations were investigated by XRD observations. The density, fracture toughness and hardness of the pure 3Y-TZP matrix were enhanced by the bi-modal sized WC inclusions. 40vol% WC phase including 75vol% of nano-sized WC inclusions resulted in higher microhardness and fracture toughness values which were 18.64 GPa and 6.94 MPa.m1/2 respectively.

Original languageEnglish
Title of host publicationProceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Print)9781899072088
Publication statusPublished - 2009
EventEuropean International Powder Metallurgy Congress and Exhibition, Euro PM 2009 - Copenhagen, Denmark
Duration: 12 Oct 2009 → 14 Oct 2009

Publication series

NameProceedings of the Euro International Powder Metallurgy Congress and Exhibition, Euro PM 2009
Volume3

Conference

ConferenceEuropean International Powder Metallurgy Congress and Exhibition, Euro PM 2009
Country/TerritoryDenmark
CityCopenhagen
Period12/10/09 → 14/10/09

Keywords

  • Ceramic matrix composites
  • Characterization
  • Hot pressing

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