超硬单硼化物：通过 W1-xTaxB 合金化提高硬度。
Superhard Monoborides: Hardness Enhancement through Alloying in W1- x Tax B.
机构信息
Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA.
出版信息
Adv Mater. 2016 Aug;28(32):6993-8. doi: 10.1002/adma.201601187. Epub 2016 May 20.
In tungsten monoboride (WB), the boron atoms are linked in parallel serpentine arrays, with tungsten atoms in between. This lattice is metallic, unlike conventional covalent superhard materials such as diamond or cubic boron nitride. By selectively substituting tungsten atoms with tantalum, the Vickers hardness can be increased to 42.8 GPa, creating a new superhard metal.
在钨单硼化物（WB）中，硼原子以平行的蛇形阵列相连，钨原子位于它们之间。这种晶格是金属性的，与传统的共价超硬材料（如金刚石或立方氮化硼）不同。通过选择性地用钽取代钨原子，可以将维氏硬度提高到 42.8GPa，从而创造出一种新的超硬金属。
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