Surface-coated cutting tool

A surface-coated cutting tool comprising:

• a tool body made of tungsten carbide-based cemented carbide;
• and
• a hard coating coated on a surface of the tool body, wherein
• (a) the hard coating comprises one or more layers, and at least one layer thereof is a hard coating layer composed of a complex nitride layer or a complex carbonitride layer of Al, Cr, and Si, having an average thickness of 0.5 to 8.0 μm, and satisfying an average composition formula:
• (Al1-x-yCrxSiy)(CzN1-z) in which x, y and z are atomic ratios and satisfy 0.1≦x≦0.4, 0.01≦y≦0.2, and 0≦z≦0.3, respectively;
• (b) the hard coating layer includes a plurality of particles comprising:
• less than 10 atomic % of non-metal component which is one or more selected from the group consisting of C and N, and metal component which is one or more elements selected from the group consisting of Cr, Al and Si;
• and
• (c) in a cross-section of the hard coating perpendicular to the surface of the tool body, a number ratio of oblate particles having an Al content of 50 atomic % or less, a long diameter of less than 0.5 μm in the cross-section, and an aspect ratio of 2.0 or more is 90% or more with respect to a total number of a plurality of the particles.