SURFACE COATED CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT CHIPPING RESISTANCE

A surface coated cutting tool comprises a tool body. A TiAlCN layer having an average layer thickness of 2.0 to 20.0 μm and represented by (Ti(1-x)Alx)(CyN(1-y)) is provided on the surface of the tool body and has an average content ratio xavg of Al and an average content ratio yavg of C that satisf...

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Bibliographische Detailangaben
Hauptverfasser:	HONMA, Hisashi, ISHIGAKI, Takuya, YANAGISAWA, Kousuke, NAKAMURA, Hiroki
Format:	Patent
Sprache:	eng
Schlagworte:	BORING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MILLING PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TURNING
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Beschreibung
Zusammenfassung:	A surface coated cutting tool comprises a tool body. A TiAlCN layer having an average layer thickness of 2.0 to 20.0 μm and represented by (Ti(1-x)Alx)(CyN(1-y)) is provided on the surface of the tool body and has an average content ratio xavg of Al and an average content ratio yavg of C that satisfy 0.60≤xavg≤0.95 and 0.00≤yavg≤0.05, an area ratio occupied by crystal grains having an NaCl-type face-centered cubic structure that satisfies 90 area % or more, and crystal grains satisfying 0.01 μm