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New Tungsten Borides, their Stability and Outstanding Mechanical Properties

  • 发布时间:2021-01-23
  • 点击次数:

  • 影响因子:6.71
  • DOI码:10.1021/acs.jpclett.8b01262
  • 发表刊物:Journal of Physical Chemistry Letters
  • 摘要:We predict new tungsten borides, some of which are promising hard materials that are expected to be stable in a wide range of conditions, according to the computed composition temperature phase diagram. New boron-rich compound WE, is predicted to be superhard, with a Vickers hardness of 45 GPa, to possess high fracture toughness of similar to 4 MPa.m(0.5), and to be thermodynamically stable in a wide range of temperatures at ambient pressure. Temperature dependences of the mechanical properties of the boron-richest WB3 and WBs phases were studied using quasiharmonic and anharmonic approximations. Our results suggest that WEs remains a high-performance material even at very high temperatures.
  • 备注:SCI Cited: 26!
  • 第一作者:Kvashnin, Alexander G.
  • 合写作者:Zakaryan, Hayk A.,赵昌明,段益峰
  • 论文类型:期刊论文
  • 学科门类:理学
  • 一级学科:物理学
  • 卷号:9
  • 期号:12
  • 页面范围:3470-3477
  • 是否译文:
  • 发表时间:2018-06-21
  • 收录刊物:SCI

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