| 摘要 |
PURPOSE:To invest a cutter with wear and abrasion resistance, thermal stabilization, and lublicity for improving the machinability of the cutter by coating the surface of cutting edge section and rake face of base metal with carbonaceneous protective coat including diamond crystals and amolphous carbon. CONSTITUTION:In vacuum container, an evaporation source 8 and ion source 16 are arranged facing toward the base metals 4 made of high speed steel, for example, attached to a holder 15. In the next step, when the container is vacuumized to a required deglee, carbon 12 is deposited on the base metals 4 from the evaporation source 8 and at the same time, an ion amount of ion beams 18 of the specified rate will be irradiated. As a result a carbonaceous protective coat mixed with diamond crystals and amolphous carbon is formed on the surface of the base metal 4. The formation of the coat 6 can invest a cutter made of material of broad range of from soft to hard material with excellent machinability and long life.
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