Patent
Polycrystalline diamond constructions having improved thermal stability
TLDR
In this paper, a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material is treated to remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst materials used to initially sinter the body.Abstract:
Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body.read more
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Patent
Thermally stable ultra-hard material compact constructions
TL;DR: In this article, a thermally stable ultra-hard compact constructions of this invention comprise an ultrahard material body that includes an ultra hard region positioned adjacent a surface of the body.
Patent
Polycrystalline diamond compacts, and related methods and applications
TL;DR: In this article, sacrificial particles may be mixed with diamond particles that facilitate removal of the metal-solvent catalyst from the sintered polycrystalline diamond table during leaching.
Patent
Superabrasive elements, methods of manufacturing, and drill bits including same
TL;DR: In this paper, a superabrasive volume including a tungsten carbide layer may be formed and the methods of manufacturing such a volume and/or compact are described.
Patent
Thermally stable polycrystalline diamond cutting elements and bits incorporating the same
TL;DR: Cutting elements are provided having substrates including end surfaces as discussed by the authors, where TSP material layers extend over only a portion of the end surface or extend into the substrates below the end surfaces.
Patent
Methods of fabricating superabrasive articles
TL;DR: In this paper, a method of fabricating a superabrasive article is described, in which a mass of unsintered diamond particles may be infiltrated with metal-solvent catalyst from a metal solvent- catalyst-containing material to promote formation of a sintered body of diamond grains including interstitial regions.
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Patent
Rotary drill bits
Douglas Caraway,John Hayward,Malcolm R. Taylor,Tom Scott Roberts,Steven Taylor,Graham Watson +5 more
TL;DR: A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of a bit so as to define between the blades the number of fluid channels leading towards the gauge region as discussed by the authors.
Patent
Diamond tools for machining
TL;DR: In this article, the diamond content is supported on and directly bonded to an extremely stiff sintered carbide substrate in order to provide mechanical support therefor to more effectively utilize the high elastic modulus of the diamond.
Patent
Temperature resistant abrasive compact and method for making same
TL;DR: In this paper, a self-bonded abrasive body is formed by sintering a mass of abrasive particles under high temperatures and pressures (HP/HT) and then the body is treated to remove all infiltrated material.
Patent
Composite polycrystalline diamond compact
TL;DR: In this article, a composite polycrystalline diamond compact is proposed, which is a composite material consisting of at least one layer of diamond crystals and precemented carbide pieces which are interspersed in one another.
Patent
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
TL;DR: In this article, a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength is described, where the diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process.