Patent ID: 8007929
Filing Date: 2011-08-30
Classification: C23C,Y10T

Abstract:
1. A surface coated cutting tool having, on a surface of a substrate, a hard coating layer including at least an aluminium oxide layer, the surface having a rake face on a main face thereof and a flank on a side face thereof, wherein, when a value calculated by the following equation (I) is a texture coefficient TC of an (HKL) plane of the aluminium oxide layer, a ratio of a texture coefficient TC R on the rake face to a texture coefficient TC F on the flank, TC F /TC R , is in a range of 0.3 to 0.95 where, (HKL) plane is one selected from (012), (104), (110), (113), (024), and (116) planes; I(HKL) is a measured value of an X-ray diffraction peak on the (HKL) plane; I Σ[I(hkl)/I