US 12,214,426 B1
Cutting tool
Haruyo Fukui, Osaka (JP); Nozomi Tsukihara, Osaka (JP); and Toshihiro Tabata, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 18/723,483
Filed by Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Nov. 29, 2023, PCT No. PCT/JP2023/042711
§ 371(c)(1), (2) Date Jun. 24, 2024,
.
Int. Cl. B23B 27/14 (2006.01); C23C 14/02 (2006.01); C23C 14/06 (2006.01); C23C 14/32 (2006.01)
CPC B23B 27/148 (2013.01) [C23C 14/024 (2013.01); C23C 14/0641 (2013.01); C23C 14/0676 (2013.01); C23C 14/325 (2013.01); B23B 2228/105 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cutting tool, comprising:
a base; and
a coating disposed on the base, wherein
the coating includes a first layer,
the first layer is composed of an alternate layer in which a first unit layer and a second unit layer are alternately stacked,
the first unit layer is composed of Ti1-aMoaN,
a represents 0.01 or more and 0.20 or less,
the second unit layer is composed of AlbCr1-bN, and
b represents 0.40 or more and 0.80 or less.