Effect of ZrC and ZrO2 Additions on the Microstructure and Properties of ZrB2–SiC Ceramics

A. Yu Gusev, V. F. Voitsik, E. S. Dedova, S. P. Buyakova

Research output: Contribution to journalArticle

Abstract

Abstract—: We have studied the effect of ZrC and ZrO2 additions on the microstructure and properties of ceramic composites based on ZrB2–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO2 increases the density, hardness, and fracture toughness of ceramic composites based on ZrB2–5% SiC. In particular, the KIc of the ZrB2–5% SiC ceramic is 4.6 ± 0.3 MPa m1/2 and that of the composite containing 20% ZrO2 is 7.3 ± 0.4 MPa m1/2.

Original languageEnglish
Pages (from-to)522-527
Number of pages6
JournalInorganic Materials
Volume56
Issue number5
DOIs
Publication statusPublished - 1 May 2020

Keywords

  • densification
  • fracture toughness
  • hardness
  • modulus of elasticity
  • zirconium diboride

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Metals and Alloys
  • Materials Chemistry

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