Fabrication of ZrB2 ceramics by reactive hot pressing of ZrB and B

Limeng Liu; Zhaoping Hou; Yanwei Zhao; Guihong Geng; Yujin Wang

doi:10.1111/jace.15949

Fabrication of ZrB₂ ceramics by reactive hot pressing of ZrB and B

Limeng Liu^*
, Zhaoping Hou
, Yanwei Zhao
, Guihong Geng
, Yujin Wang

^*Corresponding author for this work

North Minzu University
Taiyuan University of Technology
China Aerospace Science and Technology Corporation
Harbin Institute of Technology

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

13 Scopus citations

Abstract

Zirconium diboride (ZrB₂) ceramics were prepared by reactive hot pressing of ZrB+B powder mixture. Formation of a transient liquid due to eutectic reaction of ZrB₂+Zr→L_eu(ZrB2+Zr) at 1661°C following peritectic decomposition of 2ZrB=ZrB₂+Zr at 1250°C during heating up of the ZrB+B mixture facilitated densification. The liquid phase was subsequently eliminated via reaction of B with Zr in the eutectic liquid L_eu(ZrB2+Zr) to result in a dense ZrB₂ ceramic. Full density was reached after reactive hot pressing at 1900°C under 30 MPa for 1 h. The ZrB₂ ceramic had a refined microstructure consisting of grains of <1.5 μm in size and relatively good Vickers hardness (21 ± 2 GPa) and flexural strength (595 ± 63 MPa).

Original language	English
Pages (from-to)	5294-5298
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	101
Issue number	12
DOIs	https://doi.org/10.1111/jace.15949
State	Published - Dec 2018
Externally published	Yes

Keywords

mechanical properties
microstructure
reactive hot pressing
zirconium diboride

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10.1111/jace.15949

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@article{03f06b557e654f63a1555f1ef6230521,

title = "Fabrication of ZrB2 ceramics by reactive hot pressing of ZrB and B",

abstract = "Zirconium diboride (ZrB2) ceramics were prepared by reactive hot pressing of ZrB+B powder mixture. Formation of a transient liquid due to eutectic reaction of ZrB2+Zr→Leu(ZrB2+Zr) at 1661°C following peritectic decomposition of 2ZrB=ZrB2+Zr at 1250°C during heating up of the ZrB+B mixture facilitated densification. The liquid phase was subsequently eliminated via reaction of B with Zr in the eutectic liquid Leu(ZrB2+Zr) to result in a dense ZrB2 ceramic. Full density was reached after reactive hot pressing at 1900°C under 30 MPa for 1 h. The ZrB2 ceramic had a refined microstructure consisting of grains of <1.5 μm in size and relatively good Vickers hardness (21 ± 2 GPa) and flexural strength (595 ± 63 MPa).",

keywords = "mechanical properties, microstructure, reactive hot pressing, zirconium diboride",

author = "Limeng Liu and Zhaoping Hou and Yanwei Zhao and Guihong Geng and Yujin Wang",

note = "Publisher Copyright: {\textcopyright} 2018 The American Ceramic Society",

year = "2018",

month = dec,

doi = "10.1111/jace.15949",

language = "英语",

volume = "101",

pages = "5294--5298",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "12",

}

TY - JOUR

T1 - Fabrication of ZrB2 ceramics by reactive hot pressing of ZrB and B

AU - Liu, Limeng

AU - Hou, Zhaoping

AU - Zhao, Yanwei

AU - Geng, Guihong

AU - Wang, Yujin

PY - 2018/12

Y1 - 2018/12

N2 - Zirconium diboride (ZrB2) ceramics were prepared by reactive hot pressing of ZrB+B powder mixture. Formation of a transient liquid due to eutectic reaction of ZrB2+Zr→Leu(ZrB2+Zr) at 1661°C following peritectic decomposition of 2ZrB=ZrB2+Zr at 1250°C during heating up of the ZrB+B mixture facilitated densification. The liquid phase was subsequently eliminated via reaction of B with Zr in the eutectic liquid Leu(ZrB2+Zr) to result in a dense ZrB2 ceramic. Full density was reached after reactive hot pressing at 1900°C under 30 MPa for 1 h. The ZrB2 ceramic had a refined microstructure consisting of grains of <1.5 μm in size and relatively good Vickers hardness (21 ± 2 GPa) and flexural strength (595 ± 63 MPa).

AB - Zirconium diboride (ZrB2) ceramics were prepared by reactive hot pressing of ZrB+B powder mixture. Formation of a transient liquid due to eutectic reaction of ZrB2+Zr→Leu(ZrB2+Zr) at 1661°C following peritectic decomposition of 2ZrB=ZrB2+Zr at 1250°C during heating up of the ZrB+B mixture facilitated densification. The liquid phase was subsequently eliminated via reaction of B with Zr in the eutectic liquid Leu(ZrB2+Zr) to result in a dense ZrB2 ceramic. Full density was reached after reactive hot pressing at 1900°C under 30 MPa for 1 h. The ZrB2 ceramic had a refined microstructure consisting of grains of <1.5 μm in size and relatively good Vickers hardness (21 ± 2 GPa) and flexural strength (595 ± 63 MPa).

KW - mechanical properties

KW - microstructure

KW - reactive hot pressing

KW - zirconium diboride

UR - https://www.scopus.com/pages/publications/85054171463

U2 - 10.1111/jace.15949

DO - 10.1111/jace.15949

M3 - 文章

AN - SCOPUS:85054171463

SN - 0002-7820

VL - 101

SP - 5294

EP - 5298

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 12

ER -

Fabrication of ZrB₂ ceramics by reactive hot pressing of ZrB and B

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Keywords

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