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发明公开
EP3255023A1 CUBIC BORON NITRIDE POLYCRYSTALLINE BODY, CUTTING TOOL, ABRASION RESISTANT TOOL, GRINDING TOOL AND METHOD FOR PRODUCING CUBIC BORON NITRIDE POLYCRYSTALLINE BODY 有权
立方氮化硼多晶体，切削工具，耐磨工具，磨削工具及生产立方氮化硼多晶体的方法

CUBIC BORON NITRIDE POLYCRYSTALLINE BODY, CUTTING TOOL, ABRASION RESISTANT TOOL, GRINDING TOOL AND METHOD FOR PRODUCING CUBIC BORON NITRIDE POLYCRYSTALLINE BODY
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.
摘要（中）：

目的是提供韧性优异的立方氮化硼多晶材料。 含有粒状的立方晶系氮化硼的立方晶氮化硼多晶体材料，其最大粒径为100nm以下，平均结晶粒径为70nm以下，并且至少一方的板状立方氮化硼 平均长半径不小于50nm且不大于10000nm的平板形式和颗粒状的粗立方氮化硼具有超过100nm的最小晶粒尺寸并且具有不大于1000nm的平均晶粒尺寸的 提供。

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