The surface canning which possesses adhesion and the resistance blade tipping Characteristic where the abrasion proof enveloping layer is superior the cemented carbide make cutting tool

摘要

PROBLEM TO BE SOLVED: To provide a surface covered cemented carbide-made cutting tool with an abrasion resistant covered layer having excellent adhesion and chipping resistance.;SOLUTION: This surface covered cemented carbide-made cutting tool is constituted by performing a physical vapor deposition of an abrasion resistant covering layer composed of (a) a base tenacious layer comprising a titanium nitride and having an average layer thickness of 0.1-5 μm and (b) a hard surface layer comprising a single layer of either one of composite nitride layer of Ti and Al and composite carbonitride layer of them, or a double layer of both of them which satisfy the formulae (Ti_1-XAlX)N and (Ti_1-XAlX)C_1-YNY (wherein, X shows 0.15-0.65 and Y is 0.5-0.99 in an atomic ratio) and having an average layer thickness of 0.5-15 μm, on the surface of tungsten carbide-based cemented carbide base body composed by forming an amorphous layer over the average depth within a range of 1-50 nm from the surface thereof by an arc ion plating surface treatment.;COPYRIGHT: (C)2003,JPO