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Pentaborate tungsten (WB5) needs to become a cheap substitute of diamond. It can be applied in drilling technology, mechanical engineering and other fields.
Scientists conducted a computer simulation of the search for superhard materials. They predicted a previously unknown substance – pentameric tungsten (WB5), which is second in hardness only to diamond and cubic boron nitride.
Pentaborate tungsten (WB5) needs to become a cheap replacement for the diamond. It can be applied in drilling technology, mechanical engineering and other fields.
Scientists pentaborate tungsten (WB5) is super hard, have a high hardness Vickers ~ 45 HPa (from diamond – 60-120 GPA, the cubic boron nitride is 80-90 GPA) and fracture toughness of ~ 4 MPa·M0,5. It will be thermodynamically stable at atmospheric pressure over a wide range of temperatures and, according to forecasts, will maintain excellent mechanical properties even at 2000 K.
Pentaborate tungsten (WB5) can be easily obtained under normal conditions.
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