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    COMPOSITE SINTERED MATERIAL
    11.
    发明申请
    COMPOSITE SINTERED MATERIAL 审中-公开

    公开(公告)号：US20190271062A1

    公开(公告)日：2019-09-05

    申请号：US16343695

    申请日：2017-10-10

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  SUMITOMO ELECTRIC HARDMETAL CORP.

    发明人： Katsumi Okamura ,  Naoki Watanobe ,  Akito Ishii ,  Takashi Harada ,  Satoru Kukino ,  Taisuke Higashi

    IPC分类号： C22C26/00 ,  C22C1/05

    摘要： A composite sintered material includes: a plurality of diamond grains having an average grain size of less than or equal to 10 μm; a plurality of cubic boron nitride grains having an average grain size of less than or equal to 2 μm; and a remainder of a binder phase, wherein at least parts of adjacent diamond grains are bound to one another, the binder phase includes cobalt, in the composite sintered material, a content of the diamond grains is more than or equal to 30 volume % and less than or equal to 94 volume %, a content of the cubic boron nitride grains is more than or equal to 3 volume % and less than or equal to 40 volume %, and a content of the cobalt is more than or equal to 3 volume % and less than or equal to 30 volume %.

    Sintered material and method of producing same
    16.
    发明授权
    Sintered material and method of producing same 有权

    公开(公告)号：US11192826B2

    公开(公告)日：2021-12-07

    申请号：US16609369

    申请日：2018-02-15

    申请人： Sumitomo Electric Industries, Ltd.

    发明人： Akito Ishii ,  Katsumi Okamura

    IPC分类号： C04B35/5831 ,  B23B27/20 ,  C04B35/628 ,  C04B35/63 ,  C04B35/645

    摘要： A sintered material includes a first phase and a second phase, wherein the first phase is composed of cubic boron nitride particles, and the following relational expressions are satisfied when more than or equal to two cubic boron nitride particles adjacent to and in direct contact with each other among the cubic boron nitride particles are defined as a contact body, Di represents a length of an entire perimeter of the contact body, n represents the number of contact locations at which the cubic boron nitride particles are in direct contact with each other, dk represents a length of each of the contact locations, and Σdk (where k=1 to n) represents a total length of the contact locations: Dii=Di+(2×Σdk (where k=1 to n)); and [(Dii−Di)/Dii]×100≤50.