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公开(公告)号：US11208358B2
公开(公告)日：2021-12-28
申请号：US17047202
申请日：2019-09-18
IPC分类号： C04B35/5831 , B23B27/14 , C04B35/626 , C04B35/64 , C22C29/00 , C22C29/16
摘要： Provided is a cubic boron nitride sintered body including more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles, and a remainder of a binder, wherein the binder contains WC, Co, and an Al compound, the binder contains W2Co21B6, and, when IA represents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, IB represents an X-ray diffraction intensity of a (100) plane of the WC, and IC represents an X-ray diffraction intensity of a (420) plane of the W2Co21B6, a ratio IC/IA of the IC to the IA is more than 0 and less than 0.10, and a ratio IC/IB of the IC to the IB is more than 0 and less than 0.40.
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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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公开(公告)号：US11542203B2
公开(公告)日：2023-01-03
申请号：US17626064
申请日：2020-07-17
IPC分类号： C04B35/5831
摘要： A cubic boron nitride sintered material includes: 20 to 80 volume % of cBN grains; and 20 to 80 volume % of a binder phase, wherein the binder phase includes first binder grains and second binder grains, in each of the first binder grains, a ratio of the number of atoms of the first metal element to a total of the number of atoms of the titanium and the number of atoms of the first metal element is more than or equal to 0.01% and less than 10%, in each of the second binder grains, this ratio is more than or equal to 10% and less than or equal to 80%, and in an X-ray diffraction spectrum of the cubic boron nitride sintered material, one or both of conditions 1 and 2 are satisfied.
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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：US11352298B2
公开(公告)日：2022-06-07
申请号：US17255550
申请日：2019-12-16
IPC分类号： C04B35/5831
摘要： A cubic boron nitride sintered material includes: more than 80 volume % and less than 100 volume % of cubic boron nitride grains; and more than 0 volume % and less than 20 volume % of a binder phase. The binder phase includes: at least one selected from a group consisting of a simple substance, an alloy, and an intermetallic compound selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, aluminum, silicon, cobalt, and nickel. A dislocation density of the cubic boron nitride grains is more than or equal to 1×1015/m2 and less than or equal to 1×1017/m2.
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公开(公告)号：US11161790B2
公开(公告)日：2021-11-02
申请号：US17254380
申请日：2019-12-16
发明人： Hironari Moroguchi , Michiko Matsukawa , Satoru Kukino , Akito Ishii , Katsumi Okamura , Machiko Abe , Kenta Sano
IPC分类号： C04B35/5831 , B23B27/14
摘要： A cubic boron nitride sintered material comprises 30% by volume or more and 80% by volume or less of cubic boron nitride grains and 20% by volume or more and 70% by volume or less of a binder phase, the cubic boron nitride grains having a dislocation density of 3×1017/m2 or more and 1×1020/m2 or less.
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公开(公告)号：US20170233295A1
公开(公告)日：2017-08-17
申请号：US15504464
申请日：2016-04-20
发明人： Akito Ishii , Takashi Harada , Katsumi Okamura , Satoru Kukino
IPC分类号： C04B35/5831 , C04B35/64 , B23C5/16 , B23B27/14 , B23B51/00
CPC分类号： C04B35/5831 , B23B27/14 , B23B27/148 , B23B27/20 , B23B51/00 , B23B2222/14 , B23B2224/04 , B23B2226/125 , B23C5/16 , B23C2222/14 , B23C2224/04 , B23C2226/125 , B23C2228/49 , C04B35/583 , C04B35/64 , C04B2235/3217 , C04B2235/3225 , C04B2235/3246 , C04B2235/386 , C04B2235/5436 , C04B2235/5445 , C04B2235/6567
摘要： A sintered body of the present invention is a sintered body including a first material and cubic boron nitride. The first material is partially-stabilized ZrO2 including 5 to 90 volume % of Al2O3 dispersed in crystal grain boundaries or crystal grains of partially-stabilized ZrO2.
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公开(公告)号：US11383300B2
公开(公告)日：2022-07-12
申请号：US16606983
申请日：2018-07-26
发明人： Katsumi Okamura , Akito Ishii , Satoru Kukino
摘要： A sintered material has 3% by volume or more and 80% by volume or less of cubic boron nitride grains and a binder. The binder contains: one or more types selected from the group consisting of one or more compounds composed of one or more first elements selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, Al and Si and one or more second elements selected from the group consisting of C, N, O and B, and a solid solution of these compounds; and one or more metallic elements selected from the group consisting of Li, Ca, Na, Sr, Ba and Be. The binder contains the one or more metallic elements of 0.001% by mass or more and 0.5% by mass or less in total, and oxygen of 0.1% by mass or more and 10.0% by mass or less.
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公开(公告)号：US11377390B2
公开(公告)日：2022-07-05
申请号：US17255733
申请日：2019-12-16
IPC分类号： C04B35/5831 , C04B35/626 , C04B35/645
摘要： A cubic boron nitride sintered material includes: more than 80 volume % and less than 100 volume % of cubic boron nitride grains; and more than 0 volume % and less than 20 volume % of a binder phase. The binder phase includes: at least one selected from a group consisting of a simple substance, an alloy, and an intermetallic compound selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in a periodic table, aluminum, silicon, cobalt, and nickel. A dislocation density of the cubic boron nitride grains is more than or equal to 3×1017/m2 and less than or equal to 1×1020/m2.
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公开(公告)号：US11155901B2
公开(公告)日：2021-10-26
申请号：US17262220
申请日：2019-09-18
摘要： A method of producing a cubic boron nitride sintered material includes: forming an organic cubic boron nitride powder by attaching an organic substance onto a cubic boron nitride source material powder; preparing a powder mixture including more than or equal to 85 volume % and less than 100 volume % of the organic cubic boron nitride powder and a remainder of a binder source material powder by mixing the organic cubic boron nitride powder and the binder source material powder, the binder source material powder including WC, Co and Al; and obtaining the cubic boron nitride sintered material by sintering the powder mixture.
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