Cubic boron nitride sintered body and coated cubic boron nitride sintered body: Fid-Bau Portal

Cubic boron nitride sintered body and coated cubic boron nitride sintered body

KUDO TAKAHIDE

Provided is a cubic boron nitride sintered body which has excellent wear resistance and breakage resistance, thereby being capable of prolonging the service life of a tool. The cubic boron nitride sintered body comprises cubic boron nitride and a binding phase, and the content of the cubic boron nitride is 81-95 vol% relative to the total amount of the sintered body. The content of the binding phase is 5-19 vol% with respect to the total amount of the sintered body; the content of Al contained in the binder phase is 0.5-5 mass% with respect to a total of 100 mass% of all the elements contained in the sintered body; the content of W contained in the binder phase is 2-10% by mass (inclusive) with respect to a total of 100% by mass of all the elements contained in the sintered body; the content of V contained in the binder phase is 2-8% by mass (inclusive) with respect to a total of 100% by mass of all the elements contained in the sintered body; the content of Cr contained in the binder phase is 0-5 mass% with respect to a total of 100 mass% of all the elements contained in the sintered body.

提供一种因具有优异的耐磨性和耐破损性从而可以延长工具寿命的立方氮化硼烧结体。立方氮化硼烧结体包括立方氮化硼和结合相，相对于烧结体的总量，立方氮化硼的含量为81体积％以上95体积％以下；相对于烧结体的总量，结合相的含量为5体积％以上19体积％以下；相对于烧结体中包含的所有元素的总计100质量％，结合相中包含的Al含量为0.5质量％以上5质量％以下；相对于烧结体中包含的所有元素的总计100质量％，结合相中包含的W含量为2质量％以上10质量％以下；相对于烧结体中包含的所有元素的总计100质量％，结合相中包含的V含量为2质量％以上8质量％以下；相对于烧结体中包含的所有元素的总计100质量％，结合相中包含的Cr含量为0质量％以上5质量％以下。

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