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公开(公告)号：US20230202847A1
公开(公告)日：2023-06-29
申请号：US18172473
申请日：2023-02-22
IPC分类号： C01B33/023 , C01B33/037
CPC分类号： C01B33/023 , C01B33/037
摘要： A super hard polycrystalline construction is disclosed as comprising a first region comprising a body of thermally stable polycrystalline diamond material comprising a plurality of intergrown grains of diamond material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface. The interface comprises at least a portion having an uneven topology, and the third region comprises a diamond composite material including a first phase comprising a plurality of non-intergrown super hard grains, said super hard grains comprising diamond grains; and a matrix material. The superhard material and matrix material of the third region form a diamond composite material which is more acid resistant than polycrystalline diamond material having a binder-catalyst phase comprising cobalt, and/or more acid resistant than cemented tungsten carbide material.
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公开(公告)号：US20220371962A1
公开(公告)日：2022-11-24
申请号：US17559133
申请日：2021-12-22
IPC分类号： C04B35/528 , B24D3/04
摘要： A polycrystalline super hard construction is disclosed having a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, the polycrystalline super hard material comprising a plurality of grains of super hard material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface, the interface comprising a portion having an uneven topology and a substantially planar portion, the third region comprising a composite material including a first phase comprising a plurality of non-intergrown diamond grains, and a matrix material.
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公开(公告)号：US20190337857A1
公开(公告)日：2019-11-07
申请号：US16474321
申请日：2017-12-28
IPC分类号： C04B35/5831 , C04B35/56 , C04B35/626 , C04B35/63 , C04B35/645 , B22F3/14 , B22F7/06
摘要： A polycrystalline super hard construction is disclosed having a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, the polycrystalline super hard material comprising a plurality of grains of super hard material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface, the interface comprising a portion having an uneven topology and a substantially planar portion, the third region comprising a composite material including a first phase comprising a plurality of non-intergrown diamond grains, and a matrix material.
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公开(公告)号：US20190337855A1
公开(公告)日：2019-11-07
申请号：US16474290
申请日：2017-12-28
IPC分类号： C04B35/528 , B22F3/14 , B22F7/06 , C04B35/5831 , C04B35/626 , C04B35/63 , C04B35/645
摘要： A super hard polycrystalline construction has a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, said polycrystalline super hard material comprising a plurality of intergrown grains of super hard material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface, the interface comprising at least a portion having an uneven topology, the third region comprising a composite material having a first phase comprising a plurality of non-intergrown grains of super hard material, and a matrix material, the third region having a wear resistance at least three times less than sintered polycrystalline diamond material having the same average grain size of diamond grains as the super hard grains in the third region.
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