COATED CUTTING TOOL FOR METAL CUTTING APPLICATIONS GENERATING HIGH TEMPERATURES

摘要

present invention, cemented carbide, cermet, ceramics, high speed steel (HSS), polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN) on the unit and includes the, hard wear resistant coating is applied to the cathode arc relates to a cutting tool insert is grown by evaporation or physical vapor deposition (PVD) such as magnetron sputtering. The coating is, 0.45 x 0.85 and 0.90 y 1.30, and a thickness of 0.5 ~ 10 (Zr _x Al _{1 -x} ) N _y at least It includes a single layer. The layer has a nano-crystalline microstructure consisting of a single cubic phase or hexagonal phase and a mixture of cubic crystal. Insert is particularly useful in metal cutting field to generate a high temperature, and has improved crater wear resistance. ;