Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders

Dmytro DEMIRSKYI; Tohru S. SUZUKI; Kyosuke YOSHIMI; Oleg VASYLKIV

doi:10.2109/jcersj2.20151

Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders

Dmytro DEMIRSKYI^*, Tohru S. SUZUKI, Kyosuke YOSHIMI, Oleg VASYLKIV

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

In this study, we introduce a simple and effective method for producing a ternary solid-solution of diborides, a medium-entropy Zr1/3Hf1/3Ta1/3B2. Using commercially available diboride powders with equimolar ratio and performing spark plasma consolidation at 1927°C we demonstrate that single-phase medium-entropy ceramic can be consolidated using an hour-long procedure. The flexural strength and fracture toughness at room temperature were 318 ?14MPa and 2.9MPam1/2, respectively. ?020 The Ceramic Society of Japan.

Original language	English
Pages (from-to)	977-980
Number of pages	4
Journal	Journal of the Ceramic Society of Japan
Volume	128
Issue number	11
DOIs	https://doi.org/10.2109/jcersj2.20151
Publication status	Published - 2020 Nov 1
Externally published	Yes

Keywords

Flexural strength
Medium-entropyceramics
Spark plasma sintering
Ultra-high temperature ceramics

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.2109/jcersj2.20151

Cite this

@article{21c3f0cb28a443c5a75b1c5f1da6213e,

title = "Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders",

abstract = "In this study, we introduce a simple and effective method for producing a ternary solid-solution of diborides, a medium-entropy Zr1/3Hf1/3Ta1/3B2. Using commercially available diboride powders with equimolar ratio and performing spark plasma consolidation at 1927°C we demonstrate that single-phase medium-entropy ceramic can be consolidated using an hour-long procedure. The flexural strength and fracture toughness at room temperature were 318 ?14MPa and 2.9MPam1/2, respectively. ?020 The Ceramic Society of Japan.",

keywords = "Flexural strength, Medium-entropyceramics, Spark plasma sintering, Ultra-high temperature ceramics",

author = "Dmytro DEMIRSKYI and SUZUKI, {Tohru S.} and Kyosuke YOSHIMI and Oleg VASYLKIV",

note = "Funding Information: Acknowledgments D.D. was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. Publisher Copyright: {\textcopyright} 2020 Ceramic Society of Japan. All rights reserved.",

year = "2020",

month = nov,

day = "1",

doi = "10.2109/jcersj2.20151",

language = "English",

volume = "128",

pages = "977--980",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

issn = "1882-0743",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "11",

}

TY - JOUR

T1 - Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders

AU - DEMIRSKYI, Dmytro

AU - SUZUKI, Tohru S.

AU - YOSHIMI, Kyosuke

AU - VASYLKIV, Oleg

N1 - Funding Information: Acknowledgments D.D. was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. Publisher Copyright: © 2020 Ceramic Society of Japan. All rights reserved.

PY - 2020/11/1

Y1 - 2020/11/1

N2 - In this study, we introduce a simple and effective method for producing a ternary solid-solution of diborides, a medium-entropy Zr1/3Hf1/3Ta1/3B2. Using commercially available diboride powders with equimolar ratio and performing spark plasma consolidation at 1927°C we demonstrate that single-phase medium-entropy ceramic can be consolidated using an hour-long procedure. The flexural strength and fracture toughness at room temperature were 318 ?14MPa and 2.9MPam1/2, respectively. ?020 The Ceramic Society of Japan.

AB - In this study, we introduce a simple and effective method for producing a ternary solid-solution of diborides, a medium-entropy Zr1/3Hf1/3Ta1/3B2. Using commercially available diboride powders with equimolar ratio and performing spark plasma consolidation at 1927°C we demonstrate that single-phase medium-entropy ceramic can be consolidated using an hour-long procedure. The flexural strength and fracture toughness at room temperature were 318 ?14MPa and 2.9MPam1/2, respectively. ?020 The Ceramic Society of Japan.

KW - Flexural strength

KW - Medium-entropyceramics

KW - Spark plasma sintering

KW - Ultra-high temperature ceramics

UR - http://www.scopus.com/inward/record.url?scp=85096244411&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85096244411&partnerID=8YFLogxK

U2 - 10.2109/jcersj2.20151

DO - 10.2109/jcersj2.20151

M3 - Article

AN - SCOPUS:85096244411

SN - 1882-0743

VL - 128

SP - 977

EP - 980

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

IS - 11

ER -

Synthesis of medium-entropy (Zr1/3Hf1/3Ta1/3)B2 using the spark plasma consolidation of diboride powders

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this