SURFACE-COATED MEMBER, METHOD FOR MANUFACTURE THEREOF, AND CUTTING TOOL

摘要

Disclosed is a surface-coated member comprising a substrate and a coaling layer formed on the surface of the substrate. On the surface of the coating layer, two or more first phases and a second phase coexist. Each of the first phases comprises at least one compound having an oxygen and at least element selected from metals belonging to Groups 4, 5 and 6 in the periodic table, aluminum and silicon, and the second phase comprises at least one compound selected from a carbide, a nitride and a carbonitride of at least one element selected from metals belonging to Groups 4, 5 and 6 in the periodic table, aluminum and silicon. Also disclosed is a method for manufacture of the surface-coated member. Further disclosed is a cutting tool having the surface-coated member. The cutting tool comprises a rake face formed on the upper surface of the cutting tool, a flank face formed on a side surface of the cutting tool, and a cutting blade formed on a ridge line formed at the intersection of the rake face and the flank face, wherein the rake face comprises at least the surface of the coating layer.