Cutting tool made of surface-coated cubic boron nitride-based ultra-high-pressure sintered material

Surface-coated cubic Boron Nitride based cutting tool made of ultrahigh pressure sintered material, including through the formation of ultra high-pressure sintered compact cutting blade and gas-phase deposition in body hard coating on the surface, where the compact, aluminum and Titanium Nitride or aluminum oxide and Boron Nitride composition. Main containing cubic Boron Nitride, and Titanium Nitride reaction product of texture. Hard coatings with lower and upper, the lower [nitride consists of Ti1-X-YAlXSiY]N, where x is measured by Atomic ratio in the 0.40-0.60 range, y measured by Atomic ratio in the 0.02-0.10 range, the upper deck included thin-layer thin-section a and b, a has a thin layer of [Ti1-X-YAlXSiY]N composition Where x is measured by Atomic ratio in the 0.40-0.60 range, y measured by Atomic ratio in the 0.02-0.10 range, thin-layer b from Ti-nitride (TiN). The upper level consists of alternately stacking thin-layer thin-section a and b constitute.