High-temperature flexural strength performance of ternary high-entropy carbide consolidated via spark plasma sintering of TaC, ZrC and NbC

D. Demirskyi*, H. Borodianska, T. S. Suzuki, Y. Sakka, K. Yoshimi, O. Vasylkiv

*この研究の対応する著者

研究成果: Article査読

53 被引用数 (Scopus)

抄録

The solid solution formation and consolidation of the (Ta,Zr,Nb)C single-phase ceramic made from commercial TaC, ZrC and NbC powders prepared by spark plasma sintering at the temperature of 1920 °C was investigated. Phase analysis and lattice parameter measurements by X-ray diffraction showed multi-stage formation of the single-phase high-entropy-type carbide with the lattice parameter of 4.535 Å. The flexural strength and fracture toughness at room temperature were 460 ± 24 MPa and 2.9 MPa m 1/2 , respectively. With an increase in temperature, the flexural strength showed an increase up to 1600 °C to 496 ± 44 MPa, then decreased after 1800 °C to 366 ± 46 MPa.

本文言語English
ページ(範囲)12-16
ページ数5
ジャーナルScripta Materialia
164
DOI
出版ステータスPublished - 2019 4 15
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金

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