Patent ID: 8993132
Filing Date: 2015-03-31
Classification: B23B,B82Y,C04B,Y10T

Abstract:
1. A cubic boron nitride sintered body tool, comprising, at least at a cutting edge, a cubic boron nitride sintered body comprising a cubic boron nitride particle and a binder phase, said cubic boron nitride sintered body having a cubic boron nitride content of not less than 20 volume % and not more than 60 volume %, said binder phase containing at least Al on any straight line in said cubic boron nitride sintered body, a mean value of a continuous distance occupied by Al on the straight line, X/Y being not less than 0.1 and not more than 1 where X represents the number of points of contact between Al the Zr compound having an average particle size of not less than 0.01 μm and not more than 0.1 μm.