POLYCRYSTALLINE CUBIC-BORON NITRIDE CUTTING TOOL COATED BY CHEMICAL VAPOR DEPOSITION TO EXTEND THE LIFE SPAN

摘要

PURPOSE: A polycrystalline c-BN(Cubic Boron Nitride) cutting tool coated by CVD(Chemical Vapor Deposition) is provided to extend the life span in any range of cutting speed.;CONSTITUTION: A polycrystalline c-BN cutting tool(20) coated by CVD comprises a base material(28) and a coating material. The base material includes PcBN(Polycrystalline Cubic Boron Nitride) over 80wt.%. The coating material is attached to the base material, including a single-phase A-Al2O3 of 2-20 micron meters deposited on the surface of the base material.;COPYRIGHT KIPO 2013