SURFACE COATED CUTTING TOOL

To provide a surface coated cutting tool having high hardness and high toughness.SOLUTION: In the surface coated cutting tool, a coating layer has an average thickness of 1.0-20.0 μm, whose average composition is represented by the formula: (TiaVbZrcNbdHfeTaf)(CgNh); 0.01≤a/(a+b+c+d+e+f)≤0.60 0.01≤b...

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Bibliographische Detailangaben
Hauptverfasser:	TATSUOKA SHO, TOJO SHUNSUKE
Format:	Patent
Sprache:	eng ; jpn
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:	To provide a surface coated cutting tool having high hardness and high toughness.SOLUTION: In the surface coated cutting tool, a coating layer has an average thickness of 1.0-20.0 μm, whose average composition is represented by the formula: (TiaVbZrcNbdHfeTaf)(CgNh); 0.01≤a/(a+b+c+d+e+f)≤0.60 0.01≤b/(a+b+c+d+e+f)≤0.60 0.01≤c/(a+b+c+d+e+f)≤0.60 0.01≤d/(a+b+c+d+e+f)≤0.60 0.01≤e/(a+b+c+d+e+f)≤0.60 0.01≤f/(a+b+c+d+e+f)≤0.60 0.20≤g/(g+h)≤0.80 0.20≤g/(g+h)≤0.80 Sconfig≥0.90R (R is gas constant and In is natural logarithm), which includes crystal grain having a NaCl-type face-centered cubic structure.SELECTED DRAWING: Figure 2 【課題】高硬度かつ高靱性の表面被覆切削工具の提供【解決手段】被覆層は、平均厚さが１．０～２０．０μｍで、式：（ＴｉａＶｂＺｒｃＮｂｄＨｆｅＴａｆ）（ＣｇＮｈ）で表したとき、０．０１≦ａ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．０１≦ｂ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．０１≦ｃ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．０１≦ｄ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．０１≦ｅ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．０１≦ｆ／（ａ＋ｂ＋ｃ＋ｄ＋ｅ＋ｆ）≦０．６００．２０≦ｇ／（ｇ＋ｈ）≦０．８００．２０≦ｇ／（ｇ＋ｈ）≦０．８０Ｓｃｏｎｆｉｇ≧０．９０Ｒ（Ｒは気体定数、ｌｎは自然対数）で、ＮａＣｌ型面心立方構造を有する結晶粒を含む表面被覆切削工具【選択図】図２