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1.发明专利
公开(公告)号：CA2560218C
公开(公告)日：2014-07-08
申请号：CA2560218
申请日：2006-09-20
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
IPC: B01J3/06
Abstract: Thermally stable diamond-bonded compacts include a diamond-bonded body having a thermally stable region extending a distance below a diamond-bonded body surface. The thermally stable region comprises a matrix first phase of bonded together diamond crystals, and a second phase interposed within the matrix phase. At least some population of the second phase comprises a reaction product formed between an infiltrant material and the diamond crystals at high pressure/high temperature conditions. The diamond bonded body further includes a polycrystalline diamond region that extends a depth from the thermally stable region and has a microstructure comprising a polycrystalline diamond matrix phase and a catalyst material disposed within interstitial regions of the matrix phase. The compact includes a substrate attached to the diamond-bonded body.
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公开(公告)号：IE20070077A1
公开(公告)日：2007-10-03
申请号：IE20070077
申请日：2007-02-08
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
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 catalyst material. The mixture can be sintered by high pressure/high temperature process.
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公开(公告)号：CA2537726A1
公开(公告)日：2006-08-25
申请号：CA2537726
申请日：2006-02-24
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N , GRIFFO ANTHONY , BELNAP JOHN DANIEL , EYRE RONALD K
Abstract: Ultrahard composite constructions comprise a plurality of first phases dispersed within a matrix second phase, wherein each can comprise an ultrahard material includi ng 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 amou nt 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 shel l can have approximately the same particle size.
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公开(公告)号：CA2533356A1
公开(公告)日：2006-07-25
申请号：CA2533356
申请日：2006-01-20
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N , BELNAP JOHN DANIEL
Abstract: Cutting elements of this invention include an ultra hard body joined with a metallic substrate. The body includes an uppermost layer comprising a plurality of bonded ultra hard crystals and interstitial regions, and that defines a body working surface. The uppermost layer includes an outer region that is relatively more thermally stable than a remaining portion of the uppermost layer. The body further includes an intermediate layer joined to the uppermost layer, comprising a plurality of bonded ultra hard crystals, and having a wear resistance less than that of the uppermost layer remaining region. The body may additionally include a lowermost PCD layer that is interposed between and attached to the intermediate layer and the substrate.
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公开(公告)号：IE20050276A1
公开(公告)日：2005-11-30
申请号：IE20050276
申请日：2005-05-04
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
Abstract: Thermally stable diamond bonded materials and compacts include a diamond body having a thermally stable region and a PCD region, and a substrate integrally joined to the body. The termally stable region has a microstructure comprising a plurality of diamond grains bonded together by a reaction with a reactant material. The PCD region extends from the thermally stable region and has a microstructure of bonded togehter diamond grains and a metal solvent catalyst disposed interstitially between the bonded diamond grains. The compact is formed by subjecting the diamond grains, reactant material, and metal solvent catalyst to a first temperature and pressure condition to form the thermally stable region, and then to a second higher temperature condition to both form the PCD region and bond the body to a desired substrate.
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Patent Agency Ranking
公开(公告)号：CA2506471C
公开(公告)日：2013-09-10
申请号：CA2506471
申请日：2005-05-06
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
Abstract: Thermally stable diamond bonded materials and compacts include a diamond body having a thermally stable region and a PCD region, and a substrate integrally joined to the body. The thermally stable region has a microstructure comprising a plurality of diamond grains bonded together by a reaction with a reactant material. The PCD region extends from the thermally stable region and has a microstructure of bonded together diamond grains and a metal solvent catalyst disposed interstitially between the bonded diamond grains. The compact is formed by subjecting the diamond grains, reactant material, and metal solvent catalyst to a first temperature and pressure condition to form the thermally stable region, and then to a second higher temperature condition to both form the PCD region and bond the body to a desired substrate.
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7.发明专利
公开(公告)号：CA2556052C
公开(公告)日：2012-09-25
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 substrate. 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 first and second volumes form a diamond bonded body that is attached to the substrate, and the second volume forms the thermally stable diamond bonded region.
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公开(公告)号：GB2435061B
公开(公告)日：2011-05-18
申请号：GB0702488
申请日：2007-02-09
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
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.
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公开(公告)号：CA2577572A1
公开(公告)日：2007-08-09
申请号：CA2577572
申请日：2007-02-08
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N
Abstract: Thermally stable ultra-hard polycrystalline materials and compacts comprise an ultra-hard polycrystalline body that wholly or partially comprises one or mo re 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 o f 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.
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公开(公告)号：CA2851894A1
公开(公告)日：2006-11-26
申请号：CA2851894
申请日：2006-05-26
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N , BELNAP J DANIEL , MOURIK NEPHI , OLDHAM THOMAS W , GRIFFO ANTHONY
IPC: C04B35/645 , C04B35/52 , C04B41/87 , C30B33/06 , E21B10/46
Abstract: Thermally stable ultra-hard compact constructions of this invention comprise an ultra-hard material body that includes a thermally stable region positioned adjacent a surface of the body. The thermally stable region is formed from consolidated materials that are thermally stable at temperatures greater than about 750°C. The thermally stable region can occupy a partial portion of or the entire ultra-hard material body. The ultra-hard material body can comprise a composite of separate ultra-hard material elements that each form different regions of the body, at least one of the regions being thermally stable. The ultra-hard material body is attached to a desired substrate, an intermediate material is interposed between the body and the substrate, and the intermediate material joins the substrate and body together by high pressure/high temperature process.
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