SUPERHARD COMPOSITE MATERIAL Russian patent published in 1998 - IPC

FIELD: production of superhard materials in apparatuses with high pressure and temperature; may be used in mechanical engineering in capacity of edges cutting tools. SUBSTANCE: material has cutting layer including, vol.%: cubic boron nitride BN_jph, 30-50; nitrides and borides of titanium and aluminum TiN, TiB₂, AlN, AlB₁₂, 20-55; copper and a series of intermetallic compounds, 15-30; they are the following: copper and titanium CuTi₃, CuTi₂, CuTi; copper and aluminum Cu₉Al₄, Cu₃Al₂, CuAl; titanium and aluminum TiAl, TiAl₃; copper, titanium and aluminum CuAl₄Ti₈, Cu₄Al₇₁Ti₂₅ and heat-exchange layer of hard alloy of composition Ti₅K₆, and cutting layer amounts to 50-85 vol. % and heat-exchange layer, to 501-5 vol.%. EFFECT: higher cutting properties. 2 tbl