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公开(公告)号：CA2506471A1
公开(公告)日：2005-11-06
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 diamon d 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 regio n 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 an d bond the body to a desired substrate.
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公开(公告)号：CA2851894C
公开(公告)日：2015-12-01
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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公开(公告)号：CA2548247C
公开(公告)日：2014-07-22
申请号：CA2548247
申请日：2006-05-26
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N , BELNAP J DANIEL , MOURIK NEPHI , OLDHAM THOMAS W , GRIFFO ANTHONY
IPC: C04B35/575 , B23B51/00 , C04B35/645
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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公开(公告)号：CA2533356C
公开(公告)日：2013-12-31
申请号：CA2533356
申请日：2006-01-20
Applicant: SMITH INTERNATIONAL
Inventor： BELNAP JOHN DANIEL , MIDDLEMISS STEWART N
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：CA2489187C
公开(公告)日：2012-08-28
申请号：CA2489187
申请日：2004-12-03
Applicant: SMITH INTERNATIONAL
Inventor： BELNAP JOHN DANIEL , MIDDLEMISS STEWART N , GRIFFO ANTHONY , OLDHAM THOMAS W , KEMBAIYAN KUMAR T
IPC: C30B29/04 , B01J3/06 , B22F7/06 , B24D3/00 , B24D11/00 , C01B31/06 , C04B35/52 , C04B35/645 , C22C26/00 , C30B28/00 , C30B33/06 , E21B10/00 , E21B10/46 , E21B10/56 , E21B10/567 , E21B10/573
Abstract: Thermally-stable polycrystalline diamond materials of this invention comprise a first phase including a plurality of bonded together diamond crystals, and a second phase including a reaction product formed between a binder/catalyst material and a material reactive with the binder/catalyst material. The reaction product is disposed within interstitial regions of the polycrystalline diamond material that exists between the bonded diamond crystals. The first and second phases are formed during a single high pressure/high temperature process condition. The reaction product has a coefficient of thermal expansion that is relatively closer to that of the bonded together diamond crystals than that of the binder/catalyst material, thereby providing an improved degree of thermal stability to the polycrystalline diamond material.
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Patent Agency Ranking
公开(公告)号：GB2427215B
公开(公告)日：2008-09-17
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
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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27.发明专利
公开(公告)号：GB2435061A
公开(公告)日：2007-08-15
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 28 that wholly or partially comprises one or more thermally stable ultra-hard polycrystalline regions having interstitial regions where a catalyst in the form of an alkali metal from Group 1 of the periodic table is present. A substrate 36 can be attached to the body 28. 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 (fig 3D. 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. The mixture can be sintered by high pressure/high temperature process.
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公开(公告)号：GB2432599A
公开(公告)日：2007-05-30
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 18 surrounded by a shell 20 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.
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29.发明专利
公开(公告)号：CA2560218A1
公开(公告)日：2007-04-12
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 havin g 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 stabl e 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 includ es a substrate attached to the diamond-bonded body.
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公开(公告)号：CA2548247A1
公开(公告)日：2006-11-26
申请号：CA2548247
申请日：2006-05-26
Applicant: SMITH INTERNATIONAL
Inventor： MIDDLEMISS STEWART N , OLDHAM THOMAS W , GRIFFO ANTHONY , BELNAP J DANIEL , MOURIK NEPHI
IPC: C04B35/575 , C04B35/645
Abstract: Thermally stable ultra-hard compact constructions of this invention comprise an ultra- hard material body that includes a thermally stable region positioned adjace nt a surface of the body. The thermally stable region is formed from consolidated materials that are thermally stable at temperatures greater than about 750.degree.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 togeth er by high pressure/high temperature process.
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