SURFACE-COATED CUTTING TOOL HAVING FILM WITH COMPRESSIVE STRESS INTENSITY DISTRIBUTION

摘要

A surface-coated cutting tool (1), comprising a base material (2) and a film (3) formed on the base material (2). The film (3) forms an outermost layer on the base material (2) and has a compressive stress. The compressive stress varies so as to have an intensity distribution in the thickness direction of the film (3). The intensity distribution is characterized in that the compressive stress on the surface of the film is continuously reduced from the surface of the film to a first intermediate point positioned between the front surface of the film and the bottom surface of the film and has a minimum point at the first intermediate point. ® KIPO & WIPO 2007