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公开(公告)号：US11959156B2
公开(公告)日：2024-04-16
申请号：US17910801
申请日：2021-07-30
发明人： Yuichiro Watanabe , Katsumi Okamura , Akito Ishii , Yoshiki Asakawa , Akihiko Ueda , Satoru Kukino , Hisaya Hama
CPC分类号： C22C29/16 , B22F7/008 , B23B27/148 , B22F2207/01 , B22F2301/205 , B22F2302/205 , B23B2226/125
摘要： A cubic boron nitride sintered material comprises cubic boron nitride particles and a bonding material, wherein the bonding material comprises at least one first metallic element selected from the group consisting of titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, rhenium, molybdenum, and tungsten; cobalt; and aluminum; the cubic boron nitride sintered material has a first interface region sandwiched between an interface between the cubic boron nitride particles and the bonding material, and a first virtual line passing through a point 10 nm apart from the interface to the bonding material side; and when an element that is present at the highest concentration among the first metallic elements in the first interface region is defined as a first element, an atomic concentration of the first element in the first interface region is higher than an atomic concentration of the first element in the bonding material excluding the first interface region.
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公开(公告)号：US11752559B2
公开(公告)日：2023-09-12
申请号：US18018087
申请日：2021-07-30
发明人： Yuichiro Watanabe , Katsumi Okamura , Akito Ishii , Yoshiki Asakawa , Akihiko Ueda , Satoru Kukino , Hisaya Hama
IPC分类号： B23B27/14
CPC分类号： B23B27/148 , B23B2226/125
摘要： The cubic boron nitride sintered material is a cubic boron nitride sintered material comprising: cubic boron nitride particles in an amount of 70 vol % or more and less than 100 vol %, and a bonding material, wherein the bonding material includes an aluminum compound, and includes cobalt as a constituent element; the cubic boron nitride sintered material has a first region in which a space between adjacent cubic boron nitride particles is 0.1 nm or more and 10 nm or less; and when the first region is analyzed by using an energy dispersive X-ray analyzer equipped with a transmission electron microscope, the atom % of aluminum in the first region is 0.1 or more.
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