| 摘要 |
<p>An object of the present invention is to provide a cubic boron nitride-containing sintered body succeeded in heightening fracture resistance and toughness without lowering wear resistance, by making a denser sintered body with reaction sintering, as well as selection of composition of a binder phase and preparation of particles thereof, and a process for preparing the same, and it can be solved by a cubic boron nitride sintered body which comprises a binder phase containing titanium nitride and titanium carbonitride, cubic boron nitride and inevitable impurities, a distance between a Bragg angle 2¸ of a (200) plane diffraction line of titanium carbonitride and a Bragg angle 2¸ of a (200) plane diffraction line of titanium nitride in an X-ray diffraction measurement using a Cu-K± line being 0.30° or more and 0.60° or less, and a full width at half maximum intensity of the (200) plane diffraction line of titanium carbonitride being 0.30° or more and 0.50° or less.</p> |
