中文版 | English
Title

Synthesis, Phase Evolutions, and Stabilities of Boron-Rich Tungsten Borides at High Pressure

Author
Corresponding AuthorWang,Shanmin
Publication Years
2022
DOI
Source Title
ISSN
0020-1669
EISSN
1520-510X
Abstract
Boron-rich tungsten borides such as WB2+x and WB3+x have been highly expected to be superhard with many advantages over conventional superhard materials. However, because the formation of boron-rich tungsten borides is thermodynamically unfavorable at ambient pressure, their crystal structures, compositions, and properties are largely unexplored, which have impeded the rational design of functional materials in the W-B family. In this work, using unique high-pressure reactions, we report a systematic synthesis study of challenging compounds of tungsten borides including WB, WB2+x, and WB3+x. The use of pressure, combined with the controllable temperature, heating duration, and ratios of starting reactants, leads to different compositions and structures of final products with largely tunable crystallite size from nanocrystalline to single-crystal forms. In addition, the optimal conditions for the formation of WB3+x are well investigated by tuning the temperature and starting ratio of reactants, as well as by adding a solvent material. Phase diagrams and stabilities of the involved W-B compounds are also well depicted, which would provide an important guidance for future exploratory synthesis and study of the family of transition-metal borides.
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
WOS Accession No
WOS:000879497400001
EI Accession Number
20224613100547
EI Keywords
Borides ; Crystallite size ; Functional materials ; Nanocrystalline materials ; Single crystals ; Transition metals
ESI Classification Code
Metallurgy and Metallography:531 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Ceramics:812.1 ; Crystalline Solids:933.1 ; Materials Science:951
ESI Research Field
CHEMISTRY
Scopus EID
2-s2.0-85141639140
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/411882
DepartmentDepartment of Physics
前沿与交叉科学研究院
Affiliation
Department of Physics & Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
First Author AffilicationDepartment of Physics;  Academy for Advanced Interdisciplinary Studies
Corresponding Author AffilicationDepartment of Physics;  Academy for Advanced Interdisciplinary Studies
First Author's First AffilicationDepartment of Physics;  Academy for Advanced Interdisciplinary Studies
Recommended Citation
GB/T 7714
Gu,Chao,Zhou,Xuefeng,Ma,Dejiang,et al. Synthesis, Phase Evolutions, and Stabilities of Boron-Rich Tungsten Borides at High Pressure[J]. INORGANIC CHEMISTRY,2022.
APA
Gu,Chao,Zhou,Xuefeng,Ma,Dejiang,Zhao,Yusheng,&Wang,Shanmin.(2022).Synthesis, Phase Evolutions, and Stabilities of Boron-Rich Tungsten Borides at High Pressure.INORGANIC CHEMISTRY.
MLA
Gu,Chao,et al."Synthesis, Phase Evolutions, and Stabilities of Boron-Rich Tungsten Borides at High Pressure".INORGANIC CHEMISTRY (2022).
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