Novel ternary osmium-rhenium diboride (Os<1-x>Re B ) hard material and preparation method thereof

The invention discloses a transition metal osmium-rhenium diboride (OsRe B ) material with high hardness and wear resistance and a preparation method thereof and belongs to the field of inorganic non-metallic hard materials. According to the technical scheme, the method comprises the following steps: by adopting a mechanical and chemical method and high-energy ball mill equipment, and taking high-purity osmium (Os) powder, rhenium (Re) powder and boron (B) powder as raw materials, synthesizing osmium-rhenium diboride powder at a room temperature; and carrying out dense sintering on the synthesized osmium-rhenium diboride powder under an argon protection atmosphere by using a high-temperature sintering technology to obtain a high-density and high-hardness bulk material. The transition metal osmium-rhenium diboride (OsRe B ) material has the characteristics that the osmium-rhenium diboride powder is synthesized at the room temperature and the osmium-rhenium diboride (OsRe B ) bulk material of a h