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    THERMALLY STABLE ULTRA-HARD POLYCRYSTALLINE MATERIALS AND COMPACTS
    11.
    发明专利
    THERMALLY STABLE ULTRA-HARD POLYCRYSTALLINE MATERIALS AND COMPACTS 未知

    公开(公告)号：CA2577572C

    公开(公告)日：2015-07-28

    申请号：CA2577572

    申请日：2007-02-08

    Applicant: SMITH INTERNATIONAL

    Inventor： MIDDLEMISS STEWART N

    IPC: C04B35/52 ,  B01J3/06 ,  B23B51/00 ,  B23P5/00 ,  C01B31/06 ,  C01B35/14 ,  C04B35/63 ,  C04B35/645 ,  E21B10/46

    Abstract: Thermally stable ultra-hard polycrystalline materials and compacts comprise an ultra-hard polycrystalline body that wholly or partially comprises one or more thermally stable ultra-hard polycrystalline region. A substrate can be attached to the body. The thermally stable ultra-hard polycrystalline region can be positioned along all or a portion of an outside surface of the body, or can be positioned beneath a body surface. The thermally stable ultra-hard polycrystalline region can be provided in the form of a single element or in the form of a number of elements. The thermally stable ultra-hard polycrystalline region can be formed from precursor material, such as diamond and/or cubic boron nitride, with an alkali metal catalyst material. The mixture can be sintered by high pressure/high temperature process.

    ULTRAHARD COMPOSITE CONSTRUCTIONS
    12.
    发明专利
    ULTRAHARD COMPOSITE CONSTRUCTIONS 未知

    公开(公告)号：CA2537726C

    公开(公告)日：2013-08-06

    申请号：CA2537726

    申请日：2006-02-24

    Applicant: SMITH INTERNATIONAL

    Inventor： BELNAP JOHN DANIEL ,  GRIFFO ANTHONY ,  EYRE RONALD K ,  MIDDLEMISS STEWART N

    IPC: C04B35/5835 ,  B32B18/00 ,  C04B35/5831 ,  C04B35/64 ,  E21B10/46

    Abstract: Ultrahard composite constructions comprise a plurality of first phases dispersed within a matrix second phase, wherein each can comprise an ultrahard material including PCD, PcBN, and mixtures thereof. The constructions are formed from a plurality of granules that are combined and sintered at HP/HT conditions. The granules include a core surrounded by a shell and both are formed from an ultrahard material or precursor comprising an ultrahard constituent for forming the ultrahard material. When sintered, the cores form the plurality of first phases, and the shells form at least a portion of the second phase. The ultrahard material used to form the granule core may have an amount of ultrahard constituent different from that used to form the granule shell to provide desired different properties. The ultrahard constituent in the granule core and shell can have approximately the same particle size.

    Thermally stable ultra-hard material compact constructions
    13.
    发明专利
    Thermally stable ultra-hard material compact constructions 未知

    公开(公告)号：GB2427215A

    公开(公告)日：2006-12-20

    申请号：GB0610460

    申请日：2006-05-26

    Applicant: SMITH INTERNATIONAL

    Inventor： MIDDLEMISS STEWART N ,  BELNAP J DANIEL ,  MOURIK NEPHI ,  OLDHAM THOMAS W ,  GRIFFO ANTHONY

    IPC: E21B10/46 ,  C22C26/00 ,  E21B10/52 ,  E21B10/56

    Abstract: A compact construct 64 made of an ultra hard material 66 which is substantially free of catalyst material to increase the thermally stability in a region adjacent a working surface and formed from consolidated materials that are thermally stable at temperatures in excess of 750 {C, a metallic substrate 70, and an intermediate material layer 72 used as a barrier to stop migration of materials from the substrate 70 to the ultra hard material body 66. The construct 64 has the advantage of being substantially free of catalyst material at one location, and therefore more thermally stable, but can be brazed to a body at an alternative location on the substrate 70. The thermally stable ultra hard material 66, the intermediate material layer 72, and the substrate 70 are joined together by a high pressure/high temperature process to form a single construct. Additionally disclosed is a method of manufacture.

    Ultrahard composite constructions
    18.
    发明专利
    Ultrahard composite constructions 未知

    公开(公告)号：GB2432599B

    公开(公告)日：2010-03-10

    申请号：GB0603794

    申请日：2006-02-27

    Applicant: SMITH INTERNATIONAL

    Inventor： BELNAP JOHN DANIEL ,  GRIFFO ANTHONY ,  EYRE RONALD K ,  MIDDLEMISS STEWART N

    IPC: E21B10/56 ,  B22F7/06 ,  C22C26/00 ,  E21B10/567 ,  E21B10/573

    Abstract: Ultrahard composite constructions comprise a plurality of first phases dispersed within a matrix second phase, wherein each can comprise an ultrahard material including PCD, PcBN, and mixtures thereof. The constructions are formed from a plurality of granules that are combined and sintered at HP/HT conditions. The granules include a core surrounded by a shell and both are formed from an ultrahard material or precursor comprising an ultrahard constituent for forming the ultrahard material. When sintered, the cores form the plurality of first phases, and the shells form at least a portion of the second phase. The ultrahard material used to form the granule core may have an amount of ultrahard constituent different from that used to form the granule shell to provide desired different properties. The ultrahard constituent in the granule core and shell can have approximately the same particle size.

    POLYCRYSTALLINE DIAMOND COMPOSITE CONSTRUCTIONS COMPRISING THERMALLY STABLE DIAMOND VOLUME
    19.
    发明专利
    POLYCRYSTALLINE DIAMOND COMPOSITE CONSTRUCTIONS COMPRISING THERMALLY STABLE DIAMOND VOLUME 未知

    公开(公告)号：CA2556052A1

    公开(公告)日：2007-02-03

    申请号：CA2556052

    申请日：2006-08-02

    Applicant: SMITH INTERNATIONAL

    Inventor： MIDDLEMISS STEWART N

    IPC: B24D3/04 ,  E21B10/573

    Abstract: PCD composite constructions comprise a diamond body bonded to a substrat e. The diamond body comprises a thermally stable diamond bonded region that is made up of a single phase of diamond crystals bonded together. The diamond body includes a PCD region bonded to the thermally stable region and that comprises bonded together diamond crystals and interstitial regions interposed between the diamond crystals. The PCD composite is prepared by combining a first volume of PCD with a second volume of diamond crystal- containing material consisting essentially of a single phase of bonded together diamond crystals . A substrate is positioned adjacent to or joined to the first volume. The first and second volumes are subjected to high pressure/high temperature process conditions, during process the fir st and second volumes form a diamond bonded body that is attached to the substrate, and th e second volume forms the thermally stable diamond bonded region.

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