Phase stability and incompressibility of tungsten boride (WB) researched by in-situ high pressure x-ray diffraction
文献类型：期刊论文
| 作者 | Wang, JH; Liu J(刘景) ; Liu, J; Yang, K; Guan, SX; Liang, H; Chen, Y; Li, FJ; Wang, QM; Zhang, Q
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| 刊名 | PHYSICA B-CONDENSED MATTER
 |
| 出版日期 | 2017 |
| 卷号 | 521页码:6-12 |
| 关键词 | High-pressure X-ray diffraction Tungsten boride Mechanical properties Elastic mechanisms |
| ISSN号 | 0921-4526 |
| DOI | 10.1016/j.physb.2017.06.028 |
| 文献子类 | Article |
| 英文摘要 | The 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. |
| 电子版国际标准刊号 | 1873-2135 |
| WOS关键词 | SUPERHARD MATERIALS ; CRYSTALS ; HARDNESS ; DIBORIDES ; CERAMICS ; STRAIN |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000410633400002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284914]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang, JH,Liu J,Liu, J,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 | Wang, JH.,刘景.,Liu, J.,Yang, K.,Guan, SX.,...&Fan, C.(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 | Wang, JH,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. |
入库方式： OAI收割
来源：高能物理研究所
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