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CUBIC BORON NITRIDE POLYCRYSTALLINE BODY, CUTTING TOOL, ABRASION RESISTANT TOOL, GRINDING TOOL AND METHOD FOR PRODUCING CUBIC BORON NITRIDE POLYCRYSTALLINE BODY
CUBIC BORON NITRIDE POLYCRYSTALLINE BODY, CUTTING TOOL, ABRASION RESISTANT TOOL, GRINDING TOOL AND METHOD FOR PRODUCING CUBIC BORON NITRIDE POLYCRYSTALLINE BODY
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机译:立方氮化硼多晶体,切割工具,耐磨工具,研磨工具以及立方氮化硼多晶体的制造方法
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摘要
It is an object to provide a cubic boron nitride polycrystalline material excellent in toughness. A cubic boron nitride polycrystalline material containing fine cubic boron nitride which is granular, has a maximum grain size not greater than 100 nm, and has an average grain size not greater than 70 nm and at least one of plate-shaped cubic boron nitride in a form of a plate having an average major radius not smaller than 50 nm and not greater than 10000 nm and coarse cubic boron nitride which is granular, has a minimum grain size exceeding 100 nm, and has an average grain size not greater than 1000 nm is provided.
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