CEMENTED CARBIDE-MADE CUTTING TOOL WITH SURFACE CLAD EXCELLENT IN SURFACE LUBRICATIVE PROPERTY AGAINST CHIPS

摘要

PROBLEM TO BE SOLVED: To provide a cemented carbide-made cutting tool with a surface clad excellent in surface lubricative property against chips.;SOLUTION: The cemented carbide-made cutting tool with the surface clad is made by that the phase of zirconium oxide is used to physically and vaporously deposit the layer of hard cladding having a structure distributed dispersedly at the rate of 0.3 to 15 area % in a sectional analysis by the device of an auger spectroscopic analysis in the layer thickness of 0.8 to 15 μm on an untreated surface comprising the composite nitride of Ti and Al having a chemical formula: (Ti_1-XAlX) N (however, X shows 0.45 to 0.75 by atomic ratio) on the surface of the cemented carbide substrate of a tungsten carbide formula or the cermet substrate of a titanium nitride carbide system.;COPYRIGHT: (C)2003,JPO