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Phase stability and incompressibility of tungsten boride (WB) researched by in-situ high pressure x-ray diffraction
Fan, C; Liu, CJ; Peng, F; Tan, N; Tang, MJ; Zhang, Q; Wang, QM; Li, FJ; Wang, JH; Chen, Y; Liang, H; Guan, SX; Yang, K; Liu, J; Liu J(刘景)
AbstractThe binary tungsten boride, WB, has potential industrial applications as it not only has a high melting point but is generally harder and less compressible than the pure metals. Here, the physical and mechanical properties (phase stability, bulk modulus and compressibility) of WB were investigated by in situ high-pressure x-ray diffraction and theoretical calculations. Its crystal structure still remains stable even at the highest pressure of 63.7 GPa and room temperature for the diamond-anvil cell experiments. The pressure-volume (P-V) data were fitted using the Birch-Murnaghan EOS and the Vinet EOS to obtain the isothermal bulk modulus, K-0 = 452 (4) GPa and 451(3) GPa and its pressure derivative, K-0' = 4 (fixed) in the two sets of experiments with two different pressure transmitting mediums (PTMs), respectively. The excellent bulk modulus (K-0) is attributed to the high valence electron density of W atom, the layered and chain-like crystal structure of WB and the strong chemical bonds formed by Wand B atoms. Besides, anisotropic compression behavior of the unit-cell axes (a-and c-axes) of WB is manifested by experimental observations and theoretical calculations. This remarkably elastic property is closely related to the strongly directional bonding between W and B atoms.
KeywordHigh-pressure X-ray diffraction Tungsten boride Mechanical properties Elastic mechanisms
Indexed BySCI ; EI ; SCOPUS ; ADS
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
WOS IDWOS:000410633400002
EI Accession Number20172503803983
EI KeywordsAtoms - Biomechanics - Bond strength (chemical) - Borides - Crystal atomic structure - Elastic moduli - Elasticity - High pressure engineering - Isomers - Mechanical properties - Phase stability - Tungsten - Ultrasonic measurement
EI Classification Number461.3 Biomechanics, Bionics and Biomimetics - 543.5 Tungsten and Alloys - 753.1 Ultrasonic Waves - 801.4 Physical Chemistry - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 931.3 Atomic and Molecular Physics - 951 Materials Science
ADS Bibcode2017PhyB..521....6F
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017PhyB..521....6F
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017PhyB..521....6F/citations
Citation statistics
Cited Times:5 [ADS]
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Fan, C,Liu, CJ,Peng, F,et al. Phase stability and incompressibility of tungsten boride (WB) researched by in-situ high pressure x-ray diffraction[J]. PHYSICA B-CONDENSED MATTER,2017,521:6-12.
APA Fan, C.,Liu, CJ.,Peng, F.,Tan, N.,Tang, MJ.,...&刘景.(2017).Phase stability and incompressibility of tungsten boride (WB) researched by in-situ high pressure x-ray diffraction.PHYSICA B-CONDENSED MATTER,521,6-12.
MLA Fan, C,et al."Phase stability and incompressibility of tungsten boride (WB) researched by in-situ high pressure x-ray diffraction".PHYSICA B-CONDENSED MATTER 521(2017):6-12.
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