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

doi:10.1016/j.scriptamat.2019.01.024

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
巻	164
DOI	https://doi.org/10.1016/j.scriptamat.2019.01.024
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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10.1016/j.scriptamat.2019.01.024

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@article{497ba63732f04a6d9d263c0dbd0ffa13,

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

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 {\AA}. 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. ",

keywords = "Flexural strength, High temperature materials, High-entropy ceramics, Tantalum carbide",

author = "D. Demirskyi and H. Borodianska and Suzuki, {T. S.} and Y. Sakka and K. Yoshimi and O. Vasylkiv",

note = "Funding Information: D.D. was supported by World Premier International Research Center Initiative (WPI), MEXT , Japan. Publisher Copyright: {\textcopyright} 2019",

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T1 - High-temperature flexural strength performance of ternary high-entropy carbide consolidated via spark plasma sintering of TaC, ZrC and NbC

AU - Demirskyi, D.

AU - Borodianska, H.

AU - Suzuki, T. S.

AU - Sakka, Y.

AU - Yoshimi, K.

AU - Vasylkiv, O.

PY - 2019/4/15

Y1 - 2019/4/15

N2 - 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.

AB - 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.

KW - Flexural strength

KW - High temperature materials

KW - High-entropy ceramics

KW - Tantalum carbide

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