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 synthes… Show more
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