Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders

Dmytro DEMIRSKYI, Tohru S. SUZUKI, Kyosuke YOSHIMI, Oleg VASYLKIV

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, we introduce a simple and effective method for producing a ternary solid-solution of diborides, a medium-entropy Zr1/3Hf1/3Ta1/3B2. Using commercially available diboride powders with equimolar ratio and performing spark plasma consolidation at 1927°C we demonstrate that single-phase medium-entropy ceramic can be consolidated using an hour-long procedure. The flexural strength and fracture toughness at room temperature were 318 ?14MPa and 2.9MPam1/2, respectively. ?020 The Ceramic Society of Japan.

Original languageEnglish
Pages (from-to)977-980
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume128
Issue number11
DOIs
Publication statusPublished - 2020 Nov 1

Keywords

  • Flexural strength
  • Medium-entropyceramics
  • Spark plasma sintering
  • Ultra-high temperature ceramics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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