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公开(公告)号：US11629101B2
公开(公告)日：2023-04-18
申请号：US17625749
申请日：2020-07-17
发明人： Hisaya Hama , Katsumi Okamura , Akito Ishii , Satoru Kukino
IPC分类号： C04B35/5831 , C04B35/645
摘要： A cubic boron nitride sintered material includes: more than or equal to 20 volume % and less than 80 volume % of cubic boron nitride grains; and more than 20 volume % and less than or equal to 80 volume % of a binder phase, and when a carbon content is measured from a cubic boron nitride grain into the binder phase in a direction perpendicular to an interface between the cubic boron nitride grain and the binder phase using TEM-EDX, a first region having a carbon content larger than an average value of a carbon content of the binder phase exists, the interface exists in the first region, and a length of the first region is more than or equal to 0.1 nm and less than or equal to 10 nm.
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公开(公告)号：US11192827B2
公开(公告)日：2021-12-07
申请号：US16973871
申请日：2019-03-04
发明人： Katsumi Okamura , Hisaya Hama , Mayu Amemiya , Satoru Kukino
IPC分类号： C04B35/5831 , C04B35/106 , C04B35/482 , C04B35/58 , B23B27/14
摘要： A sintered material includes a cubic boron nitride, a zirconium-containing oxide, a zirconium-containing nitride, and an aluminum-containing oxide, wherein the zirconium-containing nitride includes both or one of ZrN and ZrON, and the aluminum-containing oxide includes a type Al2O3.
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公开(公告)号：US11591266B2
公开(公告)日：2023-02-28
申请号：US17625750
申请日：2020-07-17
发明人： Hisaya Hama , Katsumi Okamura , Akito Ishii , Satoru Kukino
IPC分类号： C04B35/5831
摘要： A cubic boron nitride sintered material includes: more than or equal to 50 volume % and less than 80 volume % of cubic boron nitride grains; and more than 20 volume % and less than or equal to 50 volume % of a binder phase, and when an oxygen content is measured in a direction perpendicular to an interface between cubic boron nitride grains using TEM-EDX, a first region having an oxygen content larger than an average value of an oxygen content of a cubic boron nitride grain exists, the interface exists in the first region, and a length of the first region along the direction perpendicular to the interface is more than or equal to 0.1 nm and less than or equal to 10 nm.
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4.发明授权公开(公告)号：US11155501B2
公开(公告)日：2021-10-26
申请号：US17253123
申请日：2019-02-22
发明人： Hisaya Hama , Katsumi Okamura , Mayu Amemiya , Satoru Kukino
IPC分类号： C04B35/5831 , C04B35/488 , B32B27/14 , B32B27/20
摘要： A sintered material comprises cubic boron nitride and a first material that is a partially stabilized ZrO2 with Al2O3 dispersed therein at crystal grain boundaries and/or in crystal grains, the sintered material comprising 20% by volume or more and 80% by volume or less of the cubic boron nitride, the sintered material comprising 0.001% by mass or more and 1% by mass or less of nitrogen in the first material when the first material is measured through secondary ion mass spectrometry.
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