Sumitomo Electric Hardmetal Corp.

Keita Miyamoto

Satoru Kukino

Takashi Harada

Naoki Watanobe

Hironari Moroguchi

Gaku Harada

Soichiro Kakinoki

Akihiko Ueda

Michiko Matsukawa

Cutting tool

A cBN sintered material comprising cBN particles and a binder phase, in which the binder phase contains AlN and AlB, a content proportion of cBN particles is 70 to 97 vol %, cBN sintered material has a volume resistivity up to 5&#xd7;10&#x3a9;cm, a rate of a peak intensity derived from Al with respect to a peak intensity derived from cBN particles is less than 1.0%, cBN particles include fine particles and coarse particles, coarse particles optionally include ultra-coarse particles, with respect to the entire cBN particles, a content proportion &#x3b1; of fine particles is from 10 vol %, a content proportion &#x3b2; of coarse particles is from 30 vol %, a content proportion &#x3b3; of ultra-coarse particles is 25 vol % or less, and a total of the content proportion &#x3b1; of fine particles and the content proportion &#x3b2; of coarse particles is 50 to 100 vol %.

Cubic boron nitride sintered material, tool comprising cubic boron nitride sintered material and method for manufacturing cubic boron nitride sintered material

Growing community of inventors

Itami, Japan

Keita Miyamoto