Revolution IP, PLLC
Cutting tool
A cutting tool comprises a base material which includes particles including a tungsten carbide (WC) as a main component, a binder phase including cobalt (Co) as a main component, and particles including a carbide or a carbonitride of at least one selected from the group consisting of Group 4a, 5a, and 6a elements, or a solid solution thereof; and a hard film formed on the base material, wherein the hard film comprises at least an alumina layer, a cubic phase free layer (CFL), in which the carbide or the carbonitride is not formed, is formed from a surface of the base material to a depth of 10 μm to 50 μm, and a Co content of a surface of the CFL is 80% or more of a maximum Co content of the CFL.
KORLOY INC.
B B C B C B C B B C
B23B B22F C23C B22F C22C B23B C22C B23B B23B C23C
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Sun-Yong Sung-Gu Yong-hyun Jung-wook
Ahn Lee Kim Kim