Flexural strength behavior of a ZrB2–TaB2 composite consolidated by non-reactive spark plasma sintering at 2300 °C

Dmytro Demirskyi, Oleg Vasylkiv

研究成果: Article査読

10 被引用数 (Scopus)

抄録

A bulk zirconium–tantalum diboride ceramic composite was consolidated by non-reactive spark plasma sintering (SPS) at 2300 °C. In order to consolidate the ZrB2–44 wt% TaB2 composite and restrict grain-growth, a special loading procedure was used. Pressure was applied and released at 2150 °C and 1250 °C, respectively. These SPS conditions allowed us to obtain a crack-free bulk composite with a grain size of 4–8 μm. Flexural strength at temperatures up to 1800 °C was measured for the ZrB2–TaB2 composite. Importantly, at 1600 °C, the strength was 336 ± 23 MPa, which is superior to that of monolithic ZrB2. Moreover, the ZrB2–TaB2 composite only showed plastic behavior at 1800 °C, a finding that is atypical for ZrB2-based ceramics.

本文言語English
ページ(範囲)31-35
ページ数5
ジャーナルInternational Journal of Refractory Metals and Hard Materials
66
DOI
出版ステータスPublished - 2017 8 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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