| abstract |
The present invention provides a cutting tool having both good sticking resistance and smoothness, and a manufacturing method thereof. A cutting tool and a manufacturing method thereof, the cutting tool comprises a composite material containing a ceramic phase and a metal phase, and the cutting tool is characterized in that a cutting edge portion of the cutting tool has a cutting edge ridge line and a cutting edge forming the cutting edge ridge line A configuration surface, the blade configuration surface has a surface portion in which the ceramic phase protrudes from a composite material layer having the ceramic phase and the metal phase, the ceramic phase is intermittently present, and the metal phase is absent, the The surface roughness of the surface portion satisfies the arithmetic mean roughness Ra≤0.1 μm, and the skewness Rsk≤‑0.01. |