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

D. Demirskyi, H. Borodianska, Tohru Suzuki, Y. Sakka, K. Yoshimi, O. Vasylkiv

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)12-16
Number of pages5
JournalScripta Materialia
Volume164
DOIs
Publication statusPublished - 2019 Apr 15
Externally publishedYes

Fingerprint

Spark plasma sintering
flexural strength
sparks
Bending strength
carbides
Carbides
lattice parameters
sintering
Entropy
entropy
Lattice constants
consolidation
toughness
fracture strength
solid solutions
ceramics
Consolidation
Powders
Temperature
temperature

Keywords

  • Flexural strength
  • High temperature materials
  • High-entropy ceramics
  • Tantalum carbide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Cite this

High-temperature flexural strength performance of ternary high-entropy carbide consolidated via spark plasma sintering of TaC, ZrC and NbC. / Demirskyi, D.; Borodianska, H.; Suzuki, Tohru; Sakka, Y.; Yoshimi, K.; Vasylkiv, O.

In: Scripta Materialia, Vol. 164, 15.04.2019, p. 12-16.

Research output: Contribution to journalArticle

Demirskyi, D. ; Borodianska, H. ; Suzuki, Tohru ; Sakka, Y. ; Yoshimi, K. ; Vasylkiv, O. / High-temperature flexural strength performance of ternary high-entropy carbide consolidated via spark plasma sintering of TaC, ZrC and NbC. In: Scripta Materialia. 2019 ; Vol. 164. pp. 12-16.
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AU - Yoshimi, K.

AU - Vasylkiv, O.

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