| 摘要 |
PURPOSE:To obtain the titled member capable of elongating the life of a cutting tool by forming a layer of TiC or the like of a predetermined thickness on the surface of a sintered hard alloy substrate contg. carbide or the like of a specified group metal in the periodic table as a hard phase component and an Fe group metal as a binding phase component with a Ti coated layer of a predetermined thickness in-between. CONSTITUTION:A 0.5-10mum thick hard coated layer of Ti carbide, Ti nitride, Ti carbonitroxide or Ti carboxide or a double layer of two or more of them is formed on the surface of a sintered hard alloy substrate contg. one or more among carbides and nitrides of the IVa-VIa group metals in the periodic table as a hard phase component and one or more kinds of Fe group metals as a binding phase metal with a <=2mum thick Ti coated layer in-between to obtain the titled member. The coated layers have remarkably improved bonding strength and are not peeled off, so this member can elongate the life of a cutting tool over a long term. |
