Abstract:
Methods of forming cutting elements for earth boring tools include providing a barrier material between a first powder and a second powder each comprising diamond grains, and subjecting the powders and barrier material to high temperature and high pressure conditions to form polycrystalline diamond material. The formation of the polycrystalline diamond material is catalyzed, and catalytic material may be hindered from migrating across the layer of barrier material. Cutting elements for use in earth boring tools include a barrier material disposed between a first layer of polycrystalline diamond material and a second layer of polycrystalline diamond material. Earth boring tools include one or more such cutting elements for cutting an earth formation.
Abstract:
Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools.
Abstract:
partículas de grafeno revestidas de diamante, composições e estruturas intermédias compreendendo o mesmo e os métodos de formação de poli cristalinos de partículas de diamante grafeno-revestido e compactos. partículas de diamante revestidas têm núcleos de diamantes sólidos e pelo menos uma camada de grafeno. os métodos incluem revestimento de partículas de diamante com uma espécie carregada e reevstimento das partículas de diamente com uma camada de grafeno. a composição inclui uma substância e de uma pluralidade de partículas de diamante revestidas dispersas dentro da substância. cada partícula de diamante tem um núcleo revestido de diamante e pelo menos uma camada de grafeno formado sobre pelo menos uma parte do núcleo do diamante.
Abstract:
elementos de corte incluindo nanopartículas em pelo menos uma porção deles, ferramentas de sondagem incluindo tais elementos de corte, e métodos relacionados. elementos de corte compreendem um material policristalino de multi-porção. pelo menos uma porção do material policristalino de multi-porção compreende um maior volume de nanopartículas do que pelo menos uma outra porção. ferramentas de sondagem compreendem um corpo e pelo menos um elemento de corte ligado ao corpo. pelo menos um elemento de corte compreende um material policristalino duro. o material policristalino duro compreende uma primeira porção que compreende um primeiro volume de nanopartículas. uma segunda porção do material policristalino rígido compreende um segundo volume de nanopartículas. o primeiro volume de nanopartículas difere do segundo volume de nanopartículas. métodos de formação de elementos de corte para ferramentas de sondagem compreendem a formação de um volume de material superabrasivo, incluindo a formação de uma priemira porção do material de superabrasivo compreendendo um primeiro voluem de nanopartículas. uma segunda porção do material de superabrasivo é formada compreendendo um segundo volume de nanopartídulas, o segundo volume diferente do primeiro volume.
Abstract:
A cutting element comprises a supporting substrate, and a polycrystalline compact attached to an end of the supporting substrate. The polycrystalline compact comprises a region adjacent the end of the supporting substrate, and another region at least substantially laterally circumscribing the region and having lesser permeability than the region. A method of forming a cutting element, and an earth-boring tool are also described.
Abstract:
A method of forming an instrumented cutting element comprises forming a free standing sintered diamond table having at least one chamber in the free standing sintered diamond table providing a doped diamond material within the at least one chamber and attaching a substrate to the free standing sintered diamond table to form an instrumented cutting element. The instrumented cutting element includes the doped diamond material disposed within the sintered diamond table on the substrate. A method of forming an earth boring tool comprises attaching at least one instrumented cutting element to a body of an earth boring tool. The at least one instrumented cutting element has a diamond table bonded to a substrate. The diamond table has at least one sensing element disposed at least partially within the diamond table. The at least one sensing element comprises a doped diamond material.
Abstract:
An earth boring drilling tool comprises a cutting element. The cutting element comprises a substrate a diamond table and at least one sensing element formed from a doped diamond material disposed at least partially within the diamond table. A method for determining an at bit measurement for an earth boring drill bit comprises receiving an electrical signal generated within a doped diamond material disposed within a diamond table of a cutting element of the earth boring drill bit and correlating the electrical signal with at least one parameter during a drilling operation.
Abstract:
Cutting elements for earth-boring tools may generate a shear lip at a wear scar thereon during cutting. A diamond table may exhibit a relatively high wear resistance, and an edge of the diamond table may be chamfered, the combination of which may result in the formation of a shear lip. Cutting elements may comprise multi-layer diamond tables that result in the formation of a shear lip during cutting. Earth-boring tools include such cutting elements. Methods of forming cutting elements may include selectively designing and configuring the cutting elements to form a shear Hp. Methods of cutting a formation using an earth-boring tool include cutting the formation with a cutting element on the tool, and generating a shear lip at a wear scar on the cutting element. The cutting element may be configured such that the shear lip comprises diamond material of the cutting element.