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公开(公告)号：US11827571B2
公开(公告)日：2023-11-28
申请号：US17791407
申请日：2021-01-29
发明人： Rebecka Lindvall , Antionette Can , Rachid M′Saoubi , Filip Ernst Lenrick , Volodymyr Bushlya , Jan-Eric Stahl
IPC分类号： C22C26/00 , B23B27/14 , C04B35/5831 , C04B35/478 , C04B35/58 , C04B35/628
CPC分类号： C04B35/5831 , B23B27/148 , C04B35/478 , C04B35/58071 , C04B35/62821 , C22C26/00 , B23B2226/125
摘要： This disclosure relates to a high cBN content polycrystalline cubic boron nitride, PCBN, material. The binder matrix material comprises 2 to 15 wt. % titanium diboride (TiB2).
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公开(公告)号：US11773030B2
公开(公告)日：2023-10-03
申请号：US18015298
申请日：2021-10-26
发明人： Keita Miyamoto , Satoru Kukino , Akihiko Ueda , Michiko Matsukawa
IPC分类号： C04B35/5831 , C04B35/628 , C04B41/00
CPC分类号： C04B35/5831 , C04B35/62836 , C04B35/62892 , C04B41/0072 , C04B2235/3804 , C04B2235/3865 , C04B2235/5436 , C04B2235/762
摘要： A cBN sintered material comprising cBN particles and a binder phase, in which the binder phase contains AlN and AlB2, a content proportion of cBN particles is 70 to 97 vol %, cBN sintered material has a volume resistivity up to 5×10−3 Ωcm, a rate of a peak intensity derived from Al with respect to a peak intensity derived from cBN particles is less than 1.0%, cBN particles include fine particles and coarse particles, coarse particles optionally include ultra-coarse particles, with respect to the entire cBN particles, a content proportion α of fine particles is from 10 vol %, a content proportion β of coarse particles is from 30 vol %, a content proportion γ of ultra-coarse particles is 25 vol % or less, and a total of the content proportion α of fine particles and the content proportion β of coarse particles is 50 to 100 vol %.
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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：US20220340495A1
公开(公告)日：2022-10-27
申请号：US17763273
申请日：2020-11-25
IPC分类号： C04B35/5831 , C04B35/645 , B23K20/12 , C22C29/16 , C22C27/04 , C22C1/05
摘要： This disclosure relates to a polycrystalline cubic boron nitride, PCBN, composite material comprising cubic boron nitride, cBN, particles and a binder matrix material in which the cBN particles are dispersed. The binder matrix material comprises one or more superalloys.
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公开(公告)号：US20220204412A1
公开(公告)日：2022-06-30
申请号：US17626051
申请日：2020-07-17
IPC分类号： C04B35/5831 , C04B35/645
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 first metal element is more than or equal to 0.01% and less than 10%, in each of the second binder grains, the ratio is more than or equal to 10% and less than or equal to 80%, and an average grain size of the second binder grains is more than or equal to 0.2 μm and less than or equal to 1 μm.
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公开(公告)号：US20210403385A1
公开(公告)日：2021-12-30
申请号：US16490152
申请日：2018-03-13
IPC分类号： C04B35/5831 , C04B35/64 , C22C29/16 , C22C1/05
摘要： A method of making a polycrystalline cubic boron nitride (PCBN), material is provided. The matrix precursor powder comprises an aluminium compound. The method comprises mixing matrix precursor powder comprising particles having an average particle size no greater than 250 nm, with between 30 and 40 volume percent of cubic boron nitride (cBN) particles having an average particle size of at least 4 μm, and then spark plasma sintering the mixed particles. The spark plasma sintering occurs at a pressure of at least 500 MPa, a temperature of no less than 1050° C. and no more than 1500° C. and a time of no less than 1 minute and no more than 3 minutes.
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8.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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公开(公告)号：US20210309580A1
公开(公告)日：2021-10-07
申请号：US17288929
申请日：2019-12-16
发明人： Akito ISHII , Katsumi OKAMURA
IPC分类号： C04B35/5831 , C04B35/58 , C04B35/626 , C04B35/645
摘要： A cubic boron nitride sintered material comprises 30% by volume or more and 99.9% by volume or less of cubic boron nitride grains and 0.1% by volume or more and 70% by volume or less of a binder phase, the cubic boron nitride grain having a carbon content of 0.08% by mass or less, the cubic boron nitride sintered material being free of free carbon.
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公开(公告)号：US20210246536A1
公开(公告)日：2021-08-12
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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