| 摘要 |
The present invention provides a high strength, high wear-resistant cBN sintered body with excellent wear resistance and chipping resistance in high-speed, high-efficiency cutting of hard, hard-to-cut, iron-based materials, and a cutting tool that makes use of this cBN sintered body. A cBN sintered body containing cBN component of at least 45 wt % nad not more than 9.9 wt %, wherein said cBN sintered body comprises carbon at least 0.001 wt % and not more than 0.15 wt % with respect to the cBN component, in an interior of cBN particles of the cBN sintered body and at a grain boundary between cBN particles, and a cutting tool in which this cBN sintered body is used for at least a portion involved in cutting.
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