Demirskyi ,D.
(Research Center for Functional Materials/Optical Materials Field/Ceramics Processing Group, National Institute for Materials Science)
;
Nishimura ,T
(Research Center for Structural Materials/Administrative Office, National Institute for Materials Science)
;
Suzuki ,T.S.
(Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Ceramics Group, National Institute for Materials Science)
;
Sakka ,Y
(Research Center for Electronic and Optical Materials/Optical Materials Field/Polycrystalline Optical Material Group, National Institute for Materials Science)
;
Vasylkiv ,O.
(Research Center for Electronic and Optical Materials/Optical Materials Field/Polycrystalline Optical Material Group, National Institute for Materials Science)
;
Yoshimi ,K.
(Tohoku University, Department of Materials Science and Engineering)
説明:
(abstract)We report for the first time the effect of temperature on the mechanical properties of (Ta1/3Ti1/3Zr1/3)C carbide. Flexural strength and fracture toughness were investigated using the three-point bending technique in argon. Using commercially available carbide powders with an equimolar ratio and performing spark plasma consolidation at 1973°C, we obtained a bulk single-phase medium-entropy carbide ceramic with the lattice parameter a= 4.458 Å. The flexural strength and fracture toughness at room temperature reached on average 700 MPa and 3.2 MPa m1/2, respectively. At 1800°C, local decomposition of the medium-entropy carbide took place as a structure with a local chemical gradient was observed after high-temperature tests, which increased fracture toughness by 30% (to 4.4 MPa m1/2). © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of The Korean Ceramic Society and The Ceramic Society of Japan.
権利情報:
キーワード: tantalum carbide, high-entropy ceramics, flexural strength, toughness, high-temperature materials
刊行年月日: 2020-10-01
出版者: Informa UK Limited
掲載誌:
研究助成金:
原稿種別: 著者最終稿 (Accepted manuscript)
MDR DOI: https://doi.org/10.48505/nims.5497
公開URL: https://doi.org/10.1080/21870764.2020.1840703
関連資料:
その他の識別子:
連絡先:
更新時刻: 2025-05-22 15:20:29 +0900
MDRでの公開時刻: 2025-05-22 16:32:07 +0900
ファイル名 | サイズ | |||
---|---|---|---|---|
ファイル名 |
TTZ_carbide_reference_cte.docx
(サムネイル)
application/vnd.openxmlformats-officedocument.wordprocessingml.document |
サイズ | 1.48MB | 詳細 |
ファイル名 |
TACE-S-20-00290.pdf
application/pdf |
サイズ | 3.35MB | 詳細 |