High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride

Seth Iwan; Kaleb C. Burrage; Bria C. Storr; Shane A. Catledge; Yogesh K. Vohra; Rostislav Hrubiak; Nenad Velisavljevic

doi:10.1063/5.0045592

High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride

Seth Iwan, Kaleb C. Burrage, Bria C. Storr, Shane A. Catledge, Yogesh K. Vohra, Rostislav Hrubiak, Nenad Velisavljevic

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

18 Scopus citations

Abstract

A high-entropy transition metal boride (Hf0.2 Ti0.2 Zr0.2 Ta0.2 Mo0.2)B2 sample was synthesized under high-pressure and high-temperature starting from ball-milled oxide precursors (HfO2, TiO2, ZrO2, Ta2O5, and MoO3) mixed with graphite and boron-carbide. Experiments were conducted in a large-volume Paris-Edinburgh press combined with in situ energy dispersive x-ray diffraction. The hexagonal AlB2 phase with an ambient pressure volume V0 = 27.93 ± 0.03 Å3 was synthesized at a pressure of 0.9 GPa and temperatures above 1373 K. High-pressure high-temperature studies on the synthesized high-entropy transition metal boride sample were performed up to 7.6 GPa and 1873 K. The thermal equation of state fitted to the experimental data resulted in an ambient pressure bulk-modulus K0 = 344 ± 39 GPa, dK/dT = -0.108 ± 0.027 GPa/K, and a temperature dependent volumetric thermal expansion coefficient α = α0 + α1T + α2 T-2. The thermal stability combined with a high bulk-modulus establishes this high-entropy transition metal boride as an ultrahard high-temperature ceramic material.

Original language	English
Article number	035107
Journal	AIP Advances
Volume	11
Issue number	3
DOIs	https://doi.org/10.1063/5.0045592
State	Published - Mar 1 2021
Externally published	Yes

Funding

This material was based on work supported by the Department of Energy-National Nuclear Security Administration, under Award No. DE-NA0003916. S.I. would like to acknowledge the Graduate Fellowship support under the NASA/Alabama Space Grant Consortium, Grant No. NNH19ZHA001C. Portions of this work were performed at the HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National Laboratory. HPCAT operations are supported by DOE-NNSA’s Office of Experimental Sciences. The Advanced Photon Source is a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory, under Contract No. DE-AC02-06CH11357. The work of N.V. was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344.

Funders	Funder number
Alabama	NNH19ZHA001C
DOE-NNSA’s Office of Experimental Sciences
Department of Energy-National Nuclear Security Administration	DE-NA0003916
U.S. Department of Energy
National Aeronautics and Space Administration
Office of Science
Argonne National Laboratory	DE-AC02-06CH11357
Lawrence Livermore National Laboratory	DE-AC52-07NA27344

Access to Document

10.1063/5.0045592

Cite this

@article{bc9e9fe2a66b45afabc6b9387be50dc2,

title = "High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride",

abstract = "A high-entropy transition metal boride (Hf0.2 Ti0.2 Zr0.2 Ta0.2 Mo0.2)B2 sample was synthesized under high-pressure and high-temperature starting from ball-milled oxide precursors (HfO2, TiO2, ZrO2, Ta2O5, and MoO3) mixed with graphite and boron-carbide. Experiments were conducted in a large-volume Paris-Edinburgh press combined with in situ energy dispersive x-ray diffraction. The hexagonal AlB2 phase with an ambient pressure volume V0 = 27.93 ± 0.03 {\AA}3 was synthesized at a pressure of 0.9 GPa and temperatures above 1373 K. High-pressure high-temperature studies on the synthesized high-entropy transition metal boride sample were performed up to 7.6 GPa and 1873 K. The thermal equation of state fitted to the experimental data resulted in an ambient pressure bulk-modulus K0 = 344 ± 39 GPa, dK/dT = -0.108 ± 0.027 GPa/K, and a temperature dependent volumetric thermal expansion coefficient α = α0 + α1T + α2 T-2. The thermal stability combined with a high bulk-modulus establishes this high-entropy transition metal boride as an ultrahard high-temperature ceramic material.",

author = "Seth Iwan and Burrage, {Kaleb C.} and Storr, {Bria C.} and Catledge, {Shane A.} and Vohra, {Yogesh K.} and Rostislav Hrubiak and Nenad Velisavljevic",

note = "Publisher Copyright: {\textcopyright} 2021 Author(s).",

year = "2021",

month = mar,

day = "1",

doi = "10.1063/5.0045592",

language = "English",

volume = "11",

journal = "AIP Advances",

issn = "2158-3226",

publisher = "American Institute of Physics",

number = "3",

}

TY - JOUR

T1 - High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride

AU - Iwan, Seth

AU - Burrage, Kaleb C.

AU - Storr, Bria C.

AU - Catledge, Shane A.

AU - Vohra, Yogesh K.

AU - Hrubiak, Rostislav

AU - Velisavljevic, Nenad

PY - 2021/3/1

Y1 - 2021/3/1

N2 - A high-entropy transition metal boride (Hf0.2 Ti0.2 Zr0.2 Ta0.2 Mo0.2)B2 sample was synthesized under high-pressure and high-temperature starting from ball-milled oxide precursors (HfO2, TiO2, ZrO2, Ta2O5, and MoO3) mixed with graphite and boron-carbide. Experiments were conducted in a large-volume Paris-Edinburgh press combined with in situ energy dispersive x-ray diffraction. The hexagonal AlB2 phase with an ambient pressure volume V0 = 27.93 ± 0.03 Å3 was synthesized at a pressure of 0.9 GPa and temperatures above 1373 K. High-pressure high-temperature studies on the synthesized high-entropy transition metal boride sample were performed up to 7.6 GPa and 1873 K. The thermal equation of state fitted to the experimental data resulted in an ambient pressure bulk-modulus K0 = 344 ± 39 GPa, dK/dT = -0.108 ± 0.027 GPa/K, and a temperature dependent volumetric thermal expansion coefficient α = α0 + α1T + α2 T-2. The thermal stability combined with a high bulk-modulus establishes this high-entropy transition metal boride as an ultrahard high-temperature ceramic material.

AB - A high-entropy transition metal boride (Hf0.2 Ti0.2 Zr0.2 Ta0.2 Mo0.2)B2 sample was synthesized under high-pressure and high-temperature starting from ball-milled oxide precursors (HfO2, TiO2, ZrO2, Ta2O5, and MoO3) mixed with graphite and boron-carbide. Experiments were conducted in a large-volume Paris-Edinburgh press combined with in situ energy dispersive x-ray diffraction. The hexagonal AlB2 phase with an ambient pressure volume V0 = 27.93 ± 0.03 Å3 was synthesized at a pressure of 0.9 GPa and temperatures above 1373 K. High-pressure high-temperature studies on the synthesized high-entropy transition metal boride sample were performed up to 7.6 GPa and 1873 K. The thermal equation of state fitted to the experimental data resulted in an ambient pressure bulk-modulus K0 = 344 ± 39 GPa, dK/dT = -0.108 ± 0.027 GPa/K, and a temperature dependent volumetric thermal expansion coefficient α = α0 + α1T + α2 T-2. The thermal stability combined with a high bulk-modulus establishes this high-entropy transition metal boride as an ultrahard high-temperature ceramic material.

UR - http://www.scopus.com/inward/record.url?scp=85101970937&partnerID=8YFLogxK

U2 - 10.1063/5.0045592

DO - 10.1063/5.0045592

M3 - Article

AN - SCOPUS:85101970937

SN - 2158-3226

VL - 11

JO - AIP Advances

JF - AIP Advances

IS - 3

M1 - 035107

ER -

High-pressure high-temperature synthesis and thermal equation of state of high-entropy transition metal boride

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this