CUTTING TOOL HAVING HARD COATING LAYER WITH ECELLENT WEAR RESISTANCE AND TOUGHNESS

The present invention provides a cutting tool having a hard film which is able to satisfy with balance various properties such as wear resistance, toughness, oxidation resistance, and thermal crack resistance. To this end, the present invention can provide a cutting tool which comprises: a hard tool...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AHN SEUNG SU, JO YEONG JU, GWON JIN HAN, AHN SEONG YEON, PARK JE HUN, KIM HYUNG JIN
Format:	Patent
Sprache:	eng ; kor
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 PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TURNING
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Beschreibung
Zusammenfassung:	The present invention provides a cutting tool having a hard film which is able to satisfy with balance various properties such as wear resistance, toughness, oxidation resistance, and thermal crack resistance. To this end, the present invention can provide a cutting tool which comprises: a hard tool body; and a hard film formed on the hard tool body. The hard film has a structure in which two or more different sub films are stacked in turn, which have a composition range expressed by Formula 1, Al_(1-x-y-z)Ti_xZr_yMe_zC_aO_bN_(1-a-b), and have different grid constants, wherein 0 < x < 0.48, 0 < y