Abstract:
In an embodiment, a cell assembly for use in a high-pressure cubic press may include at least one can assembly containing a diamond volume. The at least one can assembly may include an end surface in proximity to the diamond volume. The cell assembly may include at least one heating element including a major surface generally opposing and positioned adjacent to the end surface of the at least one can assembly. The at least one heating element may be positioned and configured to heat the diamond volume. The cell assembly may include at least one pressure transmitting medium extending about the at least one can assembly, and a gasket medium that defines a receiving space configured to receive the at least one can assembly, the one or more heating elements, and the at least one pressure transmitting medium.
Abstract:
High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with at least three canisters disposed therein, each comprising an axis passing through a center of the body. Such a configuration may allow for maximum planes of symmetry within the cell.
Abstract:
High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with a plurality of canisters disposed therein and at least one unique heater element adjacent each of the canisters. Heat may be generated within such a press by forming an electrical circuit with the unique heater element and anvils surrounding the cell.
Abstract:
High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with at least three canisters disposed therein, each comprising an axis passing through a center of the body. Such a configuration may allow for maximum planes of symmetry within the cell.
Abstract:
A high-pressure pump comprising an elongated casing and a hollow interior formed along a central axis thereof. At least one partition may be axially fixed within the elongated casing such that it divides the hollow interior. First and second pressure differential devices may be disposed on opposite sides of the at least one partition and each have a rotary shaft extending there through. A first rotary shaft extending through the first pressure differential device may be axially fixed by the at least one partition and rotationally fixed to a second rotary shaft extending through the second pressure differential device. The high-pressure pump may be driven by a servomotor and used in a high-pressure press.
Abstract:
A press assembly for pressurising a body, comprising a frame and a cartridge for applying load to the body, in which the frame comprises a bore for accommodating the cartridge. The press assembly further comprises an axial securement mechanism for securing the cartridge axially within the bore and a radial securement mechanism for securing the cartridge radially within the bore. The press assembly is configured such that the cartridge can be rotated in the bore between a locked condition and an unlocked condition. The radial and axial securement mechanisms are cooperatively configured with respect to each other so when the cartridge is in the locked condition, both the radial and axial securement mechanisms are engaged and when the cartridge is in the unlocked condition the radial and axial securement mechanisms are both disengaged and there is a clearance gap between the cartridge and the bore permitting the cartridge to be axially displaceable within the bore.
Abstract:
A method of forming polycrystalline diamond includes forming metal nanoparticles having a carbon coating from an organometallic material; combining a diamond material with the metal nanoparticles having the carbon coating; and processing the diamond material and the metal nanoparticles having the carbon coating to form the polycrystalline diamond. Processing includes catalyzing formation of the polycrystalline diamond by the metal nanoparticles; and forming interparticle bonds that bridge the diamond material by carbon from the carbon coating.
Abstract:
Disclosed is a method of growing a diamond, including the steps of providing a diamond seed in a reaction chamber; providing a protective layer above the diamond seed; providing a catalyst above the protective layer; providing a carbon source above the catalyst; applying pressure to the reaction chamber; heating the catalyst to a first temperature; holding the first temperature for a first duration; heating the catalyst to a second temperature; and holding the second temperature for a second duration.
Abstract:
A container assembly for use in a high-pressure press having a central pressure cell and a method of sealing a central pressure cell. The container assembly includes a container that receives a sample to be pressed, and a gasket distinct from the container, the gasket meeting the container at an interface. The container and the gasket are dimensioned to locate the interface within the central pressure cell.
Abstract:
A method of forming polycrystalline diamond includes forming metal nanoparticles having a carbon coating from an organometallic material; combining a diamond material with the metal nanoparticles having the carbon coating; and processing the diamond material and the metal nanoparticles having the carbon coating to form the polycrystalline diamond. Processing includes catalyzing formation of the polycrystalline diamond by the metal nanoparticles; and forming interparticle bonds that bridge the diamond material by carbon from the carbon coating.