Consolidation and grain growth of tantalum diboride during spark plasma sintering

Dmytro Demirskyi, Oleg Vasylkiv

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Bulk tantalum diboride ceramics have been consolidated by spark plasma sintering (SPS) at 1700–2200 °C using moderate pressure of 30 MPa. The effect of temperature and dwell time on the densification, microstructure and mechanical properties were investigated. SPS resulted in dense, crack-free specimens with strength ranging from 280 to 550 MPa. The room-temperature strength of TaB2 ceramics was analyzed as a function of the grain size. Activation energy for the grain growth process was estimated as 1078±31 kJ mol−1.

Original languageEnglish
Pages (from-to)16396-16400
Number of pages5
JournalCeramics International
Volume42
Issue number14
DOIs
Publication statusPublished - 2016 Nov 1
Externally publishedYes

Keywords

  • Grain growth
  • Microstructure
  • Spark plasma sintering
  • Strength
  • Tantalum diboride

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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