Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering

D. Demirskyi; T. S. Suzuki; S. Grasso; O. Vasylkiv

doi:10.1016/j.jeurceramsoc.2018.12.012

Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering

D. Demirskyi, T. S. Suzuki, S. Grasso, O. Vasylkiv

材料科学高等研究所

研究成果: Article › 査読

10 被引用数 (Scopus)

抄録

Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.

本文言語	English
ページ（範囲）	898-906
ページ数	9
ジャーナル	Journal of the European Ceramic Society
巻	39
号	4
DOI	https://doi.org/10.1016/j.jeurceramsoc.2018.12.012
出版ステータス	Published - 2019 4月

ASJC Scopus subject areas

セラミックおよび複合材料
材料化学

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10.1016/j.jeurceramsoc.2018.12.012

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title = "Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering",

abstract = "Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.",

keywords = "Flash sintering, Flexural strength, Hafnium diboride, High temperature materials",

author = "D. Demirskyi and Suzuki, {T. S.} and S. Grasso and O. Vasylkiv",

note = "Funding Information: D.D. was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan . S.G. was supported by Thousand Talents Program of China and Sichuan Province . Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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AU - Demirskyi, D.

AU - Suzuki, T. S.

AU - Grasso, S.

AU - Vasylkiv, O.

N1 - Funding Information: D.D. was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan . S.G. was supported by Thousand Talents Program of China and Sichuan Province . Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/4

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N2 - Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.

AB - Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.

KW - Flash sintering

KW - Flexural strength

KW - Hafnium diboride

KW - High temperature materials

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Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering

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