| 摘要 |
<p>By high compatibility between heat resistance and chipping resistance of a cubic boron nitride sintered body, a long service life of a cubic boron nitride sintered body tool is achieved. The cubic boron nitride sintered body tool of the present invention has a cubic boron nitride sintered body including cubic boron nitride particles and a binder phase at at least a cutting edge. The cubic boron nitride sintered body includes 40-70 volume % of cubic boron nitride particles. The binder phase includes a first component and a second component. The first component includes TiC, and the second component includes one or both of TiB 2 and AlB 2 . When the X-ray diffraction intensity of plane (200) of the first component is I 1 and the X-ray diffraction intensity of plane (101) of said second component is I 2 , I 1 is the maximum of the X-ray diffraction intensity of all components in the cubic boron nitride sintered body excluding the cubic boron nitride particles, and satisfies 0.01 ‰¤ I 2 /I 1 ‰¤ 0.1.</p> |
