Method for making low stress pdc

A method for making PDC with excellent abrasion resistance at high pressure in a single HPHT step without introducing high residual internal stress. In one aspect of the method, the diamond mass is subjected to an initial high pressure to compact the mass. The initial pressure is then lowered to a second pressure prior to the application of heat to the reaction cell. In another aspect, the diamond mass is subjected to an initial pressure to compact the mass, followed by raising the temperature to melt the sintering aid. The initial pressure is then lowered to a second pressure prior to lowering the temperature below the melting point of the sintering aid.

METHOD OF SOLID PCBN SYTHESIS

The invention generally relates to a sintered CBN composite compact having a non-CBN portion. The compact includes about 86 to about 90% CBN and the non CBN portion contains borides and nitrides of Al. The compact is for use as a cutting tool insert in continuous machining of gray cast iron. The sintered compact has a thermal conductivity of 1.25-4 W/cm/° K. in the temperature range of about 200° C. to about 600° C. and sonic velocity of at least about 14.5 Km/sec at room temperature. 17.-. (canceled)8. A process for making a sintered compact , the steps comprising:preparing a mixture consisting essentially of about 91 to about 94 weight % cBN and about 6 to about 10 weight % Al; andproducing a sintered compact by applying high pressure and high temperature conditions to the material,wherein the compact has a cBN grain size distribution that is at least bimodal and comprises about 80% coarse particles ranging in size from about 10 to about 60 μm and about 20% fine particles ranging in size from about 1 about 12 μm.9. The process of claim 8 , wherein the content of said Al is about 6 wt % to about 8 wt %.10. The process of claim 8 , wherein said compact has a thermal conductivity at room temperature of about 1.25 to about 4 W/cm ° K in the temperature range of about 200° C. to about 600° C.11. The process of claim 8 , wherein said compact has a sonic velocity of at least about 14.5 km/s.12. (canceled)13. (canceled)14. A process for making a sintered compact claim 8 , the steps comprising:preparing a mixture consisting essentially of about 91 to about 94 weight % cBN and about 7.5 weight % Al; andproducing a sintered compact by applying high pressure and high temperature conditions to the material,wherein the compact has a cBN grain size distribution that is at least bimodal and comprises about 80% coarse particles ranging in size from about 10 to about 60 μm and about 20% fine particles ranging in size from about 1 about 12 μm. The instant application claims the ...

THERMAL INSULATION LAYER AND PRESSURE TRANSFER MEDIUM FOR HIGH PRESSURE HIGH TEMPERATURE CELL

A thermal insulation layer for an HPHT cell, the thermal insulation layer including CsCl, CsBr, CsI, or a combination thereof, and the thermal insulation layer being electrically insulating; the thermal insulation layer including a thermal insulation sleeve and/or a thermal insulation button for an HPHT cell; a pressure transfer medium for an HPHT cell, the pressure transfer medium including CsBr, CsI or a combination thereof; and a pressure transfer medium for an HPHT cell, the pressure transfer medium including CsCl and additive, with the proviso that the additive does not include ZrOare disclosed. HPHT press systems that include a thermal insulation layer or a pressure transfer medium according to embodiments of the present disclosure are also disclosed. 1. A thermal insulation layer for use in a high-pressure high-temperature press , the thermal insulation layer comprising a material selected from the group consisting of cesium chloride (CsCl) , cesium bromide (CsBr) , cesium iodide (CsI) and combinations thereof , said thermal insulation layer being electrically insulating.2. The thermal insulation layer of claim 1 , wherein the thermal insulation layer has an electrical resistivity of more than about 0.1 ohm.cm.3. The thermal insulation layer of claim 1 , wherein the thermal insulation layer further comprises an additive.4. The thermal insulation layer of claim 3 , wherein the additive comprises electrically conductive or semiconductive particles.5. The thermal insulation layer of claim 3 , wherein the additive comprises a material selected from the group consisting of chromites claim 3 , ferrites claim 3 , metals claim 3 , semiconductors claim 3 , superconductive oxides and combinations thereof.6. The thermal insulation layer of claim 5 , wherein the additive comprises chromite according to the formulas LCrOor MCrO claim 5 , wherein L is yttrium or a rare earth element claim 5 , and Mis a transition metal claim 5 , Mg or Li.7. The thermal insulation layer of ...

POLYCRYSTALLINE DIAMOND TABLES AND COMPACTS AND RELATED METHODS

In an embodiment, a polycrystalline diamond table includes a plurality of bonded diamond grains and a plurality of interstitial regions defined by the plurality of bonded diamond grains. The polycrystalline diamond table may be at least partially leached such that at least a portion of at least one interstitial constituent has been removed from at least a portion of the plurality of interstitial regions by exposure to a leaching agent. The leaching agent may include a mixture having a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4, and water in a concentration of about 50 weight % to about 85 weight %. Various other materials, articles, and methods are also disclosed. 1. A polycrystalline diamond body produced by a process comprising:providing a polycrystalline diamond body including bonded diamond grains defining interstitial regions comprising at least one interstitial constituent disposed in the interstitial regions; a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4; and', 'water in a concentration of about 50 weight % to about 85 weight %; and, 'at least partially leaching the polycrystalline diamond body with a leaching agent comprising a mixture havingproducing an at least partially leached polycrystalline diamond body by removing at least a portion the at least one interstitial constituent from the polycrystalline diamond table.2. The polycrystalline diamond table of claim 1 , the process further comprising removing substantially all of the at least one interstitial constituent from the polycrystalline diamond body.3. The polycrystalline diamond body of claim 1 , wherein providing a polycrystalline diamond body including bonded diamond grains comprises providing a polycrystalline diamond compact including a polycrystalline diamond table bonded to a substrate.4. The polycrystalline diamond body of claim 3 , the process further comprising claim 3 , after the at least partially leaching ...

Composite polycrystal

A composite polycrystal contains polycrystalline diamond formed of diamond grains that are directly bonded mutually, and compressed graphite dispersed in the polycrystalline diamond.

Molecularly doped nanodiamond

A method of making molecularly doped nanodiamond. A versatile method for doping diamond by adding dopants into a carbon precursor and producing diamond at high pressure, high temperature conditions. Molecularly doped nanodiamonds that have direct incorporation of dopants and therefore without the need for ion implantation. Molecularly-doped diamonds that have fewer lattice defects than those made with ion implantation. 1. A molecularly doped nanodiamond made from the steps comprising:adding a dopant to a sol-gel precursor;synthesizing via sol-gel synthesis an amorphous carbon aerogel comprising an open pore network;drying the amorphous carbon aerogel;sintering the amorphous carbon aerogel;preserving the open pore network;loading the amorphous carbon aerogel into a diamond anvil cell;forming a sealed chamber around the amorphous carbon aerogel;flowing a noble gas into the sealed chamber;liquefying the noble gas by condensation;allowing the liquefied noble gas to fill the open pore network of the doped amorphous carbon aerogel;generating noble gas defects within the doped amorphous carbon aerogel;without using ion implantation;pressurizing the diamond anvil cell;heating the doped amorphous carbon aerogel incorporating the noble gas dopants; andtransforming the doped amorphous carbon aerogel incorporating the noble gas dopants into molecularly doped nanodiamond incorporating the noble gas dopants.2. The molecularly doped nanodiamond ofwherein the noble gas is one selected from the group consisting of Ar, Kr, Xe, and Ne.3. The molecularly doped nanodiamond of wherein the step of liquefying the noble gas by condensation comprises condensing the noble gas with liquid nitrogen or cryogen.4. The molecularly doped nanodiamond of wherein the step of pressurizing the diamond anvil cell comprises pressures ≥20 Gpa and wherein the step of heating the doped amorphous carbon aerogel comprises temperatures ≥2000K.5. A molecularly doped nanodiamond comprising:an amorphous carbon ...

PRESS ASSEMBLY AND COUPLING MECHANISMS FOR SAME

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. 1. 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 comprising 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 being 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 being 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; in which the axial securement ...

Cutting elements formed using liquid hydrocarbons and hydrated hydrocarbons, and earth-boring tools comprising such cutting elements

Methods of forming polycrystalline diamond include encapsulating diamond particles and a hydrocarbon substance in a canister, and subjecting the encapsulated diamond particles and hydrocarbon substance to a pressure and a temperature sufficient to form inter-granular bonds between the diamond particles. Cutting elements for use in an earth-boring tool includes a polycrystalline diamond material formed by such processes. Earth-boring tools include such cutting elements.

ASSEMBLIES FOR MAKING SUPERHARD PRODUCTS BY HIGH PRESSURE/HIGH TEMPERATURE PROCESSING

Assemblies as disclosed herein for making superhard products by HPHT process comprise a first can portion for accommodating a mixture of materials therein and a second can mated with the first can portion. A leak-tight seal is provided between the first can portion and second can portion in a manner that accommodates the manufacture of relatively longer superhard products without having to change other elements or members used for HPHT processing to thereby provide improved manufacturing flexibility and cost efficiency. 1. An assembly for making superhard constructions by high pressure/high temperature process comprising:a first can portion for accommodating a mixture of materials therein for forming a superhard product by high temperature/high pressure process;a second can portion disposed over an open end of the first can portion and having a closed end and a sidewall extending from the closed end, the second can portion sidewall extending an axial length along a sidewall of the first can portion to provide an overlap therewith;a stop off positioned adjacent an open end of the first can portion to form barrier;a wetting element disposed adjacent the stop off; anda sealant material disposed along a sidewall portion of the first can portion and positioned adjacent the wetting element and interposed between sidewalls of the first can portion and second can portion.2. The assembly as recited in wherein the wetting element is in the form of a cup positioned over the first can portion open end and interposed between the first can portion and the second can portion.3. The assembly as recited in wherein the second can portion is positioned over the cup such that the second can portion sidewall extends axially to cover the cup sidewall and at least a portion of the sealant material.4. The assembly as recited in wherein the sealant material is positioned adjacent a terminal edge of an open end of the cup.5. The assembly as recited in wherein the stop off is disposed along ...

Containment Element Comprising Mullite or a Polymorph of Mullite, Assembly Comprising Same, Method of Making Same and Method of Using Same

A containment element for a pressure containment assembly, comprising mullite or a polymorph of mullite. 127-. (canceled)28. A containment element for a pressure containment assembly for containing matter at a pressure of at least 1 gigapascal (GPa) , comprising 10 to 90 weight percent mullite , at least 20 weight percent talc and at most 15 weight percent silicate compounds.29. A containment element as claimed in claim 28 , comprising kaolinite.30. A containment element as claimed in claim 28 , comprising kyanite.31. A containment element as claimed in claim 28 , comprising cordierite.32. A containment element as claimed in claim 28 , comprising binder material.33. A containment element as claimed in claim 28 , comprising at least 5 weight percent silica.34. A containment element as claimed in claim 28 , free from magnesium carbonate or precursor material for magnesium carbonate.35. A containment element as claimed in claim 28 , comprising a gasket.36. A containment element as claimed in claim 28 , comprising at least 5 weight percent kyanite.37. A containment element as claimed in claim 28 , for an assembly for containing matter at a pressure of at least 1 GPa and a temperature of at least 1 claim 28 ,000 degrees centigrade.38. A containment element as claimed in claim 28 , comprising grains of a first hard material having a first internal friction and grains of a second hard material having a second internal friction.39. A containment element as claimed in claim 38 , in which the second hard material is a different phase of the first hard material.40. A containment assembly for containing matter at an ultra-high pressure claim 28 , comprising a containment element as claimed in .41. A containment assembly as claimed in claim 40 , for a belt type ultra-high pressure press.42. A containment assembly as claimed in a claim 40 , for a cubic type ultra-high pressure press.43. A containment assembly as claimed in claim 40 , for a tetrahedral type ultra-pressure press.44 ...

Balanced Cell for High-Pressure High-Temperature Press

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. 1. A cell for a high-pressure high-temperature press , comprising:a body with at least three canisters disposed therein; whereineach of the canisters comprises an axis passing through a center of the body.2. The cell of claim 1 , wherein the body comprises a plurality of planes of symmetry.3. The cell of claim 1 , wherein the body is shaped as a cube claim 1 , tetrahedron or dodecahedron.4. The cell of claim 1 , wherein the body is formed of two mating forms.5. The cell of claim 1 , wherein the body is formed of a plurality of generally pyramidal shaped forms.6. The cell of claim 5 , wherein each of the generally pyramidal shaped forms comprises synthetic pyrophyllite.7. The cell of claim 5 , wherein at least one of the generally pyramidal shaped forms has an edge that overlaps an edge of an adjacent form.8. The cell of claim 5 , wherein each of the pyramidal shaped forms comprises a truncated apex.9. The cell of claim 5 , wherein a base of at least one of the generally pyramidal shaped forms comprises different material properties than a remainder of the form.10. The cell of claim 9 , wherein a material of the base is less fluidic under high pressure and high temperature conditions than a material of the remainder.11. The cell of claim 1 , wherein the body is formed of a plurality of generally cubic shaped forms.12. The cell of claim 11 , wherein each of generally cubic shaped forms comprises a truncated corner.13. The cell of claim 12 ...

Individual Resistance Heating for High-Pressure High-Temperature Cell

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. 1. A cell for a high-pressure high-temperature press , comprising:a body with a plurality of canisters disposed therein; andat least one unique heater element adjacent each of the canisters.2. The cell of claim 1 , wherein the heater element comprises an electrically resistive heater.3. The cell of claim 1 , further comprising at least one temperature sensor within the body.4. The cell of claim 3 , wherein the at least one temperature sensor comprises at least one temperature sensor for each of the canisters.5. The cell of claim 3 , wherein the at least one temperature sensor comprises at least one temperature sensor for each of the unique heater elements.6. The cell of claim 1 , further comprising an electrically conductive tube about a diameter of each of the canisters.7. The cell of claim 1 , wherein at least one of the heater elements forms part of an electrical circuit reaching outside of the body.8. The cell of claim 7 , wherein the electrical circuit includes at least two anvils of an HPHT press.9. The cell of claim 7 , wherein the electrical circuit includes at least two heater elements and a center form within the body.10. A method for generating heat within a high-pressure high-temperature press claim 7 , comprising:providing a plurality of canisters disposed within a cell and at least one unique heater element adjacent each of the canisters;forming a first ...

ASSEMBLY FOR SYNTHESIS OF A SUPERHARD MATERIAL

An assembly for High Pressure High Temperature (HPHT) synthesis of a superhard material. The assembly comprises a container comprising a first metal. A closure also comprising the first metal is sealed to the container using a sealant material. The sealant material comprises a second metal, the seal comprising a composition of the first and second metals formable below the melting point of the second metal. The container contains superhard material. 1. An assembly for High Pressure High Temperature , HPHT , synthesis of a superhard material , the assembly comprising:a container comprising a first metal;a closure comprising the first metal and sealed to the container using a sealant material, the sealant material comprising a second metal, the seal comprising a composition of the first and second metals formable below the melting point of the second metalwherein the container contains superhard material.2. The assembly according to claim 1 , wherein the superhard material is disposed in a second container claim 1 , and the second container is disposed in the container.3. The assembly according to claim 1 , wherein the first metal is selected from any of titanium claim 1 , zirconium claim 1 , tantalum and alloys thereof.4. The assembly according to claim 1 , wherein the second metal is selected from any of copper and alloys thereof.5. The assembly according to claim 1 , wherein the first metal comprises titanium claim 1 , the second metal comprises copper claim 1 , and the composition comprises TiCu.6. The assembly according to claim 1 , wherein the container comprises:an opening for receiving the superhard material;a flange disposed around the opening;wherein the sealant material is disposed between the flange and the closure; andthe flange is crimped to hold the closure in place.7. The assembly according to claim 6 , wherein the flange and the sealant material each have an annular shape.8. The assembly according to claim 1 , wherein the superhard material comprises ...

Polycrystalline Diamond and Method for Manufacturing Same, Scribe Tool, Scribe Wheel, Dresser, Rotating Tool, Orifice for Water Jet, Wire Drawing Die, Cutting Tool, Electrode, and Processing Method Using Polycrystalline Diamond

Provided is polycrystalline diamond having a diamond single phase as basic composition, in which the polycrystalline diamond includes a plurality of crystal grains and contains boron, at least either of nitrogen and silicon, and a remainder including carbon and trace impurities; the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of the boron is present in an isolated substitutional type; the nitrogen and the silicon are present in an isolated substitutional type or an interstitial type in the crystal grains; each of the crystal grains has a grain size of less than or equal to 500 nm; and the polycrystalline diamond has a surface covered with a protective film. 1. Polycrystalline diamond having a diamond single phase as basic composition , whereinthe polycrystalline diamond includes a plurality of crystal grains,the polycrystalline diamond contains boron, at least either of nitrogen and silicon, and a remainder including carbon and trace impurities,the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of all the boron is present in an isolated substitutional type,the nitrogen and the silicon are present in an isolated substitutional type or an interstitial type in the crystal grains,each of the crystal grains has a grain size of less than or equal to 500 nm, andthe polycrystalline diamond has a surface covered with a protective film.2. The polycrystalline diamond according to claim 1 , wherein greater than or equal to 99 atomic % of all the boron is present in an isolated substitutional type in the crystal grains.3. The polycrystalline diamond according to claim 1 , wherein the boron has an atomic concentration of greater than or equal to 1×10cmand less than or equal to 1×10cm.4. The polycrystalline diamond according to claim 1 , wherein the nitrogen has an atomic concentration of greater than or equal to 1×10cmand less than or equal to 1×10cm.5. The ...

METHOD OF FORMING GRAPHENE MATERIAL BY GRAPHITE EXFOLIATION

A method of producing graphene sheets and plates from graphitic material including (a) mixing graphitic material particles in a liquid medium to form a suspension; (b) compressing the suspension; (c) directing the compressed suspension through a local constriction into an area of reduced pressure to decompress the suspension in less than 2×10second to a pressure less than 20% of the compression pressure, thereby exfoliating graphene sheets and plates from the graphitic material. 1. A method of producing a graphene material from graphitic material particles , the method comprising the steps of:(a) mixing the graphitic material particles in a liquid medium to form a graphite suspension; and(b) exposing said graphite suspension to a compression and explosive decompression treatment, the treatment comprising compressing the graphite suspension to a first pressure, directing the compressed graphite suspension at least once through a local constriction into an area of reduced pressure whereby the graphite suspension is decompressed from the first pressure to a second pressure, thereby expanding the graphitic material particles and exfoliating graphene material from the graphitic material particles to produce graphene material dispersed in said liquid medium.2. The method of claim 1 , wherein the graphite suspension is decompressed from the first pressure to the second pressure in less than 2×10second.3. The method of claim 1 , wherein the first pressure is at least 1000 PSI.4. The method of claim 1 , wherein the second pressure is less than 20% of the first pressure.5. The method of claim 1 , wherein the graphene material produced by the method is graphene sheets claim 1 , graphene plates or a mixture thereof.6. The method of claim 1 , wherein the graphite suspension passes through one or more orifices claim 1 , nozzles or apertures in the local constriction.7. The method of claim 1 , wherein said liquid medium comprises water claim 1 , organic solvent claim 1 , alcohol ...

MULTI-LAYERED POLYCRYSTALLINE DIAMOND STRUCTURE

A polycrystalline diamond structure comprises a first region and a second region adjacent the first region, the second region being bonded to the first region by intergrowth of diamond grains. The first region comprises a plurality of alternating strata or layers (), (), each or one or more strata or layers in the first region having a thickness in the range of around 5 to 300 microns. The polycrystalline diamond (PCD) structure has a diamond content of at most about 95 percent of the volume of the PCD material, a binder content of at least about 5 percent of the volume of the PCD material, and one or more of the layers or strata in the first region comprise and/or the second region comprises diamond grains having a mean diamond grain contiguity of greater than about 60 percent and a standard deviation of less than about 2.2 percent. There is also disclosed a method of making such a poly crystalline diamond structure. 1. A polycrystalline diamond structure comprising a first region and a second region adjacent the first region , the second region being bonded to the first region by intergrowth of diamond grains , the first region comprising a plurality of alternating strata or layers , each or one or more strata or layers in the first region having a thickness in the range of around 5 to 300 microns; wherein the polycrystalline diamond (PCD) structure has a diamond content of at most about 95 percent of the volume of the PCD material , a binder content of at least about 5 percent of the volume of the PCD material , and one or more of the layers or strata in the first region comprise and/or the second region comprises diamond grains having a mean diamond grain contiguity of greater than about 60 percent and a standard deviation of less than about 2.2 percent.2. A PCD structure according to claim 1 , wherein each stratum or layer in the first region has a thickness in the range of around 30 to 300 microns.3. A PCD structure according to claim 1 , wherein one or more ...

METHODS FOR FORMING POLYCRYSTALLINE MATERIALS INCLUDING PROVIDING MATERIAL WITH SUPERABRASIVE GRAINS PRIOR TO HPHT PROCESSING

Grains of superabrasive material may be infiltrated with a molten metal alloy at a relatively low temperature, and the molten metal alloy may be solidified within interstitial spaces between the grains of superabrasive material to form a solid metal alloy having the grains of superabrasive material embedded therein. The solid metal alloy with the grains of superabrasive material embedded therein may be subjected to a high pressure and high temperature process to form a polycrystalline superabrasive material. A polycrystalline superabrasive material also may be formed by depositing material on surfaces of grains of superabrasive material in a chemical vapor infiltration process to form a porous body, which then may be subjected to a high pressure and high temperature process. Polycrystalline compacts and cutting elements including such compacts may be formed using such methods. 1. A method of forming a polycrystalline compact , comprising:depositing a layer of catalyst material on grains of superabrasive material to form a three-dimensional solid porous body, the three-dimensional solid porous body comprising the grains of superabrasive material bonded to one another by the catalyst material deposited thereon and having a shape of the polycrystalline compact to be formed;infiltrating pores of the three-dimensional solid porous body with a molten metal alloy at a temperature of about 1200° C. or less and cooling and solidifying the molten metal alloy within the pores of the three-dimensional solid porous body to form a solid metal alloy within the three-dimensional solid porous body, wherein the grains of superabrasive material within the three-dimensional solid porous body are free of inter-granular bonds directly between the grains of superabrasive material; andsubjecting the three-dimensional solid porous body having the solid metal alloy therein to a high pressure and high temperature process to form inter-granular bonds between the grains of superabrasive ...

Single-crystal diamond and manufacturing method thereof

Single-crystal diamond is composed of carbon in which a concentration of a carbon isotope 12 C is not lower than 99.9 mass % and a plurality of inevitable impurities other than carbon. The inevitable impurities include nitrogen, boron, hydrogen, and nickel, and a total content of nitrogen, boron, and hydrogen of the plurality of inevitable impurities is not higher than 0.01 mass %. In order to manufacture single-crystal diamond, initially, a hydrocarbon gas in which a concentration of the carbon isotope 12 C is not lower than 99.9 mass % is subjected to denitrification.

DENSE PACKING PARTICLE SIZE DISTRIBUTION FOR PDC CUTTERS

A superabrasive compact and a method of making the superabrasive compact are disclosed. A method of making a superabrasive compact comprises steps of providing a plurality of superabrasive particles having a particle size distribution with a first ratio (d50)/(d50 principle particles) ranging from about 0.86 to about 0.92; providing a support to the plurality of superabrasive particles; and subjecting the support and the plurality of superabrasive particles to conditions of an elevated temperature and pressure suitable for producing the polycrystalline superabrasive compact. 18-. (canceled)9. A method of making a superabrasive compact , comprising:providing a plurality of superabrasive particles having a broad fine particle distribution with mean particle size d50 ranging from about 12 microns to about 30 microns and having an elongated tail of fine superabrasive particles ranging from about 1 micron to about 9 microns;providing a support to the plurality of superabrasive particles; andsubjecting the support and the plurality of superabrasive particles to conditions of an elevated temperature and pressure suitable for producing the polycrystalline superabrasive compact.10. The method of claim 9 , wherein the superabrasive particles are selective from a group consisting cubic boron nitride claim 9 , diamond claim 9 , and diamond composite materials.11. The method of claim 9 , wherein the support is cemented tungsten carbide support.12. The method of claim 9 , wherein the particle size distribution has a first metric (d50)/(d50 principle particles) claim 9 , wherein the first metric is from about 0.86 to about 0.92.13. The method of claim 9 , wherein the particle size distribution has a second metric defined as percentage of volume of crystals greater than (0.5 times the d50) claim 9 , wherein the second metric is from about 86 to about 90.14. The method of claim 9 , wherein the particle size distribution has a third metric defined as percentage of volume less than (0 ...

ULTRAHARD NANOTWINNED BORON NITRIDE BULK MATERIALS AND SYNTHETIC METHOD THEREOF

The invention relates to an ultrahard nanotwinned boron nitride bulk material and synthetic method thereof. Particularly, the invention discloses a nanocrystalline cubic boron nitride bulk material containing high density of twins and synthetic method thereof, in which a nanotwinned boron nitride bulk are synthesized from nanospherical boron nitride particles (preferably with a size of 5-70 nm) with onion-like structure as raw materials by using high temperature and high pressure synthesis. As compared with the prior arts, the nanotwinned boron nitride bulk obtained according to the invention has a much higher hardness than that of a normal cubic boron nitride single crystal. The nanotwinned boron nitride bulk has great prospects in applications, such as precision and ultra-precision machining, abrasives, drawing dies, and special optics as well as other fields. 1. Preparation method for high pressure synthesis of an ultrahard nanotwinned boron nitride bulk material , comprising the following steps:(1) Placing nanospherical BN particles with onion-like structure as raw materials into a mold and pressing them into a preform;(2) Loading the preform into a high pressure synthetic mold, and synthesizing under 4-25 GPa and 1200-2300° C.; and(3) Decompressing and cooling.2. Preparation method according to claim 1 , wherein the Vickers hardness of the nanotwinned boron nitride bulk material is 60-120 GPa.3. Preparation method according to claim 1 , wherein the volume of the ultrahard nanotwinned boron nitride bulk material is 1-2000 mm.4. Preparation method according to claim 1 , wherein the ultrahard nanotwinned boron nitride bulk material comprises high density of twins inside claim 1 , and is a nanocrystal with sphalerite structure and a grain size of 5-100 nm.5. Preparation method according to claim 1 , wherein the particle size of the nanospherical BN particles with onion-like structure is 5-70 nm.62. Preparation method according to claim 1 , wherein the Step () is ...

POLYCRYSTALLINE DIAMOND CONSTRUCTIONS

Polycrystalline diamond constructions are formed from a mixture of diamond grains including a first volume of fine-sized diamond grains, and a second volume of coarse-sized diamond grains. The fine-sized diamond grains are partially graphitized, and the coarse-sized diamond grains are not graphitized. The mixture of diamond grains is subjected to high pressure/high temperature sintering process conditions in the presence of a sintering aid thereby forming polycrystalline diamond. Contact areas between coarse-sized diamond grains in the polycrystalline diamond construction are substantially free of graphite. 1. A diamond grain composition for sintering polycrystalline diamond constructions comprising:a first volume of fine-sized diamond grains having an average grain size of from about 0.01 to 6 micrometers, wherein the fine-sized diamond grains are partially graphitized; anda second volume of coarse-sized diamond grains having an average grain size of greater than 6 micrometers, wherein the coarse-sized diamond grains are not graphitized.2. The diamond grain composition as recited in wherein the mixture further comprises a sintering aid.3. The diamond grain composition as recited in wherein a population of the sintering aid is fused together with the partially graphitized fine-sized diamond grains.4. The diamond grain composition as recited in wherein the sintering aid is selected from the group consisting of iron claim 2 , cobalt claim 2 , nickel claim 2 , manganese claim 2 , and combinations thereof.5. The diamond grain composition as recited in wherein the composition comprises about 2 to 50 percent by volume of the fine-sized diamond grains based on the total volume of the first and second volumes of diamond grains.6. The diamond grain composition as recited in wherein the composition comprises a minority volume content of the fine-sized diamond grains claim 1 , and a majority content of the coarse-sized diamond grains based on the total volume of the first and ...

THERMAL INSULATION LAYER AND PRESSURE TRANSFER MEDIUM FOR HIGH-PRESSURE HIGH-TEMPERATURE CELL

HPHT press system includes a thermal insulation layer. The thermal insulation layer includes CsCl, CsBr, CsI, or a combination thereof, and the thermal insulation layer is electrically insulating. The thermal insulation layer may include a thermal insulation sleeve and/or a thermal insulation button for an HPHT cell. 1. A high-pressure high-temperature press system , the high-pressure high-temperature press system comprising:at least one anvil;a heating element;a current path for electrically connecting the at least one anvil and the heating element; anda thermal insulation layer surrounding the heating element, the thermal insulation layer comprising a material selected from the group consisting of cesium chloride (CsCl), cesium bromide (CsBr), cesium iodide (CsI) and combinations thereof, said thermal insulation layer being electrically insulating.2. The high-pressure high-temperature press system of claim 1 , wherein the thermal insulation layer is separated from the anvil by a material that is different from the material of the thermal insulation layer.3. The high-pressure high-temperature press system of claim 1 , wherein the thermal insulation layer is separate from the current path.4. The high-pressure high-temperature press system of claim 1 , wherein the thermal insulation layer has an electrical resistivity of greater than about 0.1 ohm·cm.5. The high-pressure high-temperature press system of claim 1 , wherein the thermal insulation layer further comprises an additive comprising electrically conductive or semiconductive particles claim 1 , wherein the thermal insulation layer is an electrically insulating layer having an electrical resistivity of greater than 0.1 ohm-cm.6. The high-pressure high-temperature press system of claim 5 , wherein the additive comprises a material selected from the group consisting of chromites claim 5 , ferrites claim 5 , metals claim 5 , semiconductors claim 5 , superconductive oxides and combinations thereof.7. The high- ...

SYSTEM AND METHOD FOR RAPID, HIGH THROUGHPUT, HIGH PRESSURE SYNTHESIS OF MATERIALS FROM A LIQUID PRECURSOR

The present disclosure relates to a system and method for synthesis of condensed, nano-carbon materials to create nanoparticles. In one embodiment the system may have a source of liquid precursor, a flow control element and a shock wave generating subsystem. The flow control element is in communication with the source of the liquid precursor and creates a jet of liquid precursor. The shock wave generating subsystem drives a shock wave through at least a substantial portion of a thickness of the jet of liquid precursor to sufficiently compress the jet of liquid precursor, and to increase a pressure and a temperature of the jet of liquid precursor, to create solid state nanoparticles. 1. A system for synthesis of condensed , nano-carbon materials to create nanoparticles , the system comprising:a source of liquid precursor;a flow control element in communication with the source of the liquid precursor which creates a jet of liquid precursor exiting the flow control element; anda shock wave generating subsystem for generating a shock wave through at least a substantial portion of a thickness of the jet of liquid precursor to sufficiently compress the jet of liquid precursor, and to increase a pressure and a temperature of the jet of liquid precursor, to create solid state nanoparticles.2. The system of claim 1 , wherein the shock wave generating subsystem comprises an electromagnetic wave energy source which generates at least one electromagnetic wave energy beam directly at the jet of liquid precursor to impinge the jet of liquid precursor.3. The system of claim 1 , wherein the liquid precursor comprises liquid carbon monoxide.4. The system of claim 3 , wherein the solid state nanoparticles comprise nano-diamonds.5. The system of claim 1 , wherein the jet of liquid precursor comprises a jet shaped as a rectangular sheet.6. The system of claim 1 , wherein the jet of liquid precursor has a thickness of 10s to 100 s of microns.7. The system of claim 1 , wherein the jet of ...

METHOD FOR PRODUCING CARBON PARTICLES BY DETONATION

A production method of a carbon particle by a detonation method includes a step of disposing an explosive substance in a periphery of a raw material substance, and a step of subjecting the explosive substance to a detonation. The explosive substance is a liquid at normal temperature and normal pressure. The raw material substance contains an aromatic compound having 3 or more nitro groups. 1. A production method of a carbon particle by a detonation method , comprising a step of disposing an explosive substance which is a liquid at normal temperature and normal pressure in a periphery of a raw material substance comprising an aromatic compound having 3 or more nitro groups , and a step of subjecting the explosive substance to a detonation.2. The production method according to claim 1 , wherein the raw material substance comprises at least one kind selected from the group consisting of trinitrotoluene claim 1 , cyclotrimethylenetrinitramine claim 1 , cyclotetramethylenetetranitramine claim 1 , pentaerythritol tetranitrate claim 1 , and trinitrophenylmethylnitramine.3. The production method according to claim 1 , wherein the explosive substance comprises at least one kind selected from the group consisting of a mixture of hydrazine and hydrazine nitrate claim 1 , a mixture of hydrazine and ammonium nitrate claim 1 , nitromethane claim 1 , and a mixture of hydrazine and nitromethane.4. The production method according to claim 1 , wherein the detonation is performed in a state where the raw material substance and the explosive substance are charged in a chamber.5. The production method according to claim 4 , wherein an atmosphere in the chamber does not substantially comprise an oxygen gas.6. The production method according to claim 4 , wherein a coolant is disposed in a periphery of the raw material substance and the explosive substance in the chamber.7. The production method according to claim 6 , wherein the coolant is a substance which does not substantially produce ...

METHODS OF FABRICATING POLYCRYSTALLINE DIAMOND AND POLYCRYSTALLINE DIAMOND COMPACTS

Embodiments of the invention relate to methods of forming polycrystalline diamond compacts (“PDCs”), wherein the PDC includes a polycrystalline diamond (“PCD”) table in which at least one Group VIII metal is at least partially alloyed with phosphorus and/or at least one other alloying element to improve the thermal stability of the PCD table. The disclosed PDCs may be used in a variety of applications, such as rotary drill bits, machining equipment, and other articles and apparatuses. 1. A method of fabricating a polycrystalline diamond compact , the method comprising:providing a polycrystalline diamond compact including a polycrystalline diamond table bonded to an interfacial surface of a substrate, the polycrystalline diamond table including an upper surface remote from the interfacial surface of the substrate and at least one lateral surface extending between the upper surface of the polycrystalline diamond table and the interfacial surface of the substrate, wherein the polycrystalline diamond table includes a plurality of bonded diamond grains defining a plurality of interstitial regions, at least a portion of the plurality of interstitial regions including at least one Group VIII metal disposed therein;positioning one or more alloying materials adjacent to at least a portion the upper surface of the polycrystalline diamond table to form an assembly, wherein the one or more alloying materials includes phosphorus;subjecting the assembly to an inert environment; andwhile the assembly is subjected to the inert environment, heating the assembly to an effective temperature and for an effective time to alloy at least some of the at least one Group VIII metal with the one or more alloying materials.2. The method of claim 1 , wherein subjecting the assembly to an inert environment including subjecting the assembly to a vacuum of less than about 10torr.3. The method of claim 1 , wherein subjecting the assembly to an inert environment including subjecting the assembly to ...

CAPSULE ASSEMBLIES FOR ULTRA-HIGH PRESSURE PRESSES AND METHODS FOR USING THEM

A capsule assembly for an ultra-high pressure furnace, comprising a containment tube defining a central longitudinal axis, a chamber suitable for accommodating a reaction assembly, a proximate and a distal end heater assembly, and a side heater assembly. When assembled, the chamber and the side heater assembly are contained within the containment tube and arranged longitudinally between the proximate and distal end heater assemblies. Each end heater assembly comprises a respective conduction volume forming a respective electrical path through the end heat assembly. The side heater assembly electrically connects the respective conducting volumes to each other, and heat is produced in the chamber in response to an electric current flowing through the side heater assembly and the conducting volumes. At least the proximate end heater assembly comprises a first insulation component including an outer insulation volume. The conducting volume of at least the proximate end heater assembly includes an inner conducting volume, and the inner conducting volume is laterally spaced apart from the containment tube by the outer insulation volume. 1. A capsule assembly for an ultra-high pressure furnace , comprising:a containment tube defining a central longitudinal axis,a chamber suitable for accommodating a reaction assembly,a proximate and a distal end heater assembly, anda side heater assembly;configured such that, when assembled as in use: contained within the containment tube and', 'arranged longitudinally between the proximate and distal end heater assemblies;, 'the chamber and the side heater assembly will be'}each end heater assembly will comprise a respective conduction volume forming a respective electrical conduction path through the end heat assembly;the side heater assembly will electrically connect the respective conducting volumes to each other, andheat can be produced in the chamber in response to an electric current flowing through the side heater assembly and the ...

Automated Systems and Methods to Facet and Polish Diamond for Productization

Systems and methods are directed to selecting unpolished regular-polygonal diamonds; selecting diamond powder based on size, profile and hardness to use as acceleration media; and polishing the regular-polygonal diamonds by accelerating at least the diamond powder using a plurality of spray patterns determined as a function of the respective hardnesses of the diamond powder and the unpolished regular-polygonal diamond, the spray patterns directed at the unpolished regular-polygonal diamonds. The method further includes accelerating the regular-polygonal diamonds and the diamond powder to create the spray patterns; directing the spray patterns so that they overlap causing the diamond powder to polish the regular polygonal diamonds; separating the regular-polygonal diamond from the diamond powder; and repeating the steps of accelerating the regular polygonal diamonds and the diamond powder and the separating until the regular-polygonal diamond is polished. 1. A method , comprising:selecting unpolished regular-polygonal diamonds;selecting diamond powder based on size, profile and hardness to use as acceleration media; andpolishing the regular-polygonal diamonds by accelerating at least the diamond powder using a plurality of spray patterns determined as a function of the respective hardnesses of the diamond powder and the unpolished regular-polygonal diamond, the spray patterns directed at the unpolished regular-polygonal diamonds.2. The method of further comprising:accelerating the regular-polygonal diamonds and the diamond powder to create the spray patterns;directing the spray patterns so that they overlap causing the diamond powder to polish the regular polygonal diamonds;separating the regular-polygonal diamond from the diamond powder; andrepeating the steps of accelerating the regular polygonal diamonds and the diamond powder and the separating until the regular-polygonal diamond is polished.3. The method of wherein:the accelerating uses a cylindrical wheel ...

DIAMOND COMPOSITES BY LITHOGRAPHY-BASED MANUFACTURING

A lithography based method for the manufacture of diamond composite materials in which green bodies are prepared by a layer-by-layer construction with resulting green bodies de-bound and sintered to achieve a dense high hardness material. 1. A method of preparing a diamond composite with a layered structure comprising:preparing a slurry containing a polymerisable binder, an initiator and diamond particles;forming a layered structure green body by stepwise irradiation curing of the slurry containing diamond particles, binder and initiator;forming a white body comprising at least 30 vol % diamond particles by de-binding the layered structure green body;introducing an infiltrant to the white body; andsintering the white body by heating the white body from an initial stage up to a maximum sintering temperature by incremental temperature increases at a rate of 10 to 60° C./min at a first pressure.2. The method as claimed in claim 1 , wherein the diamond particles have a particle size of less than or equal to 200 μm.3. The method as claimed in claim 1 , wherein the diamond particles have a particle size of less than or equal to 100 μm.4. The method as claimed in claim 1 , wherein the diamond particles have a bi-modular or multi-modular particle size distribution and at least one fraction of diamond particles has a particle size of less than 30 μm and at least one fraction of diamond particles has a particle size of less than 100 μm.5. The method as claimed in claim 1 , wherein the step of de-binding includes heating the green body up to a first de-binding temperature via incremental temperature increases claim 1 , wherein the de-binding temperature is in a range of from 200° C. to 600° C. and the incremental temperature increases are at increments of 0.1 to 2° C./min6. The method as claimed in claim 1 , wherein the step of de-binding includes exposing the green body to a supercritical fluid.7. The method as claimed in claim 1 , further comprising continuing to heat the ...

POLYCRYSTALLINE DIAMOND FROM VITREOUS CARBON AND TRANSITION METAL FREE CARBONATE CATALYST AND METHOD OF PRODUCING

A transition metal catalyst free polycrystalline diamond compact having enhanced thermal stability is disclosed herein. The diamond compact may be attached to a hard metal substrate. The polycrystalline diamond body includes a plurality of diamond grains bonded to adjacent diamond grains by diamond-to-diamond bonds. Sintering of the PCD and the formation of diamond-to-diamond bonding is achieved by transforming graphene treated diamond crystals that are blended with non-metal additives at high pressure and high temperature into a diamond compact that is free of transition metal catalysts. Non-metal additives include vitreous and other non-equilibrium forms of carbon as well as Sr-, K- and Ca-containing carbon sources. 1. A polycrystalline diamond compact , comprising:interstitial nanocrystalline diamond; andat least one of calcium carbonate, strontium carbonate, strontium oxide and potassium bicarbonate.2. The polycrystalline diamond compact of claim 1 , wherein the nanocrystalline diamond has a diameter of 50 nm to 500 nm.3. The polycrystalline diamond compact of claim 2 , wherein the nanocrystalline diamond exhibits Raman spectra comprising broad peaks at 1328 cm.4. The polycrystalline diamond compact of claim 2 , wherein the nanocrystalline diamond exhibits Raman spectra comprising broad peaks in the range of from 1025 cmto 1250 cm.5. The polycrystalline diamond compact of claim 1 , further comprising copper and/or tin.6. The polycrystalline diamond compact of claim 1 , wherein carbonate comprises 0.5% volume to 8.0% volume.7. The polycrystalline diamond compact of claim 1 , wherein the oxide comprises 0.5 to 8.0% volume.8. The polycrystalline diamond compact of claim 1 , wherein the bicarbonate comprises 0.5 to 8.0% volume.9. The polycrystalline diamond compact of claim 1 , wherein the thermal stability ranges from 3.0 passes to 6.0 passes.10. The polycrystalline diamond compact of claim 1 , wherein the abrasion resistance is up to 30% better than standard ...

Polycrystalline diamond and manufacturing method thereof, scribe tool, scribing wheel, dresser, rotating tool, orifice for water jet, wiredrawing die, cutting tool, and electron emission source

Nano polycrystalline diamond is composed of carbon, an element of different type which is an element other than carbon and is added to be dispersed in carbon at an atomic level, and an inevitable impurity. The polycrystalline diamond has a crystal grain size not greater than 500 nm. The polycrystalline diamond can be fabricated by subjecting graphite in which the element of different type which is an element other than carbon has been added to be dispersed in carbon at an atomic level to heat treatment within high-pressure press equipment.

POLYCRYSTALLINE DIAMOND AND MANUFACTURING METHOD THEREOF, SCRIBE TOOL, SCRIBING WHEEL, DRESSER, ROTATING TOOL, ORIFICE FOR WATER JET, WIREDRAWING DIE, CUTTING TOOL, AND ELECTRON EMISSION SOURCE

Nano polycrystalline diamond is composed of carbon, an element of different type which is an element other than carbon and is added to be dispersed in carbon at an atomic level, and an inevitable impurity. The polycrystalline diamond has a crystal grain size not greater than 500 nm. The polycrystalline diamond can be fabricated by subjecting graphite in which the element of different type which is an element other than carbon has been added to be dispersed in carbon at an atomic level to heat treatment within high-pressure press equipment. 115.-. (canceled)16. The method for manufacturing polycrystalline diamond according to claim 17 , whereinin said step of converting said graphite to diamond, said graphite is subjected to heat treatment within said high-pressure press equipment without adding a sintering aid or a catalyst.17. A method for manufacturing polycrystalline diamond claim 17 , comprising the steps of:preparing graphite that a group III element is added to be dispersed in carbon at an atomic level; andconverting said graphite to diamond by subjecting said graphite to heat treatment within high-pressure press equipment whereinsaid step of preparing graphite includes the step of forming graphite on a base material by introducing a gas mixture of a gas containing said group III element and a hydrocarbon gas within a vacuum chamber and thermally decomposing said gas mixture at a temperature not lower than 1500° C.18. The method for manufacturing polycrystalline diamond according to claim 17 , whereinin said step of converting said graphite to diamond, said graphite formed on said base material is subjected to heat treatment at a high pressure not lower than 8 GPa and at 1500° C. or higher.19. The method for manufacturing polycrystalline diamond according to claim 17 , whereinsaid gas mixture is fed toward a surface of said base material.20. The method for manufacturing polycrystalline diamond according to claim 17 , whereinsaid hydrocarbon gas is a methane ...

Adjustment Assembly, Load Assembly Comprising Same, Press System Comprising Same and Method of Adapting Load Assembly

An adjustment assembly comprising a platform () moveably coupled to a base (), and an adjustment mechanism comprising a deflection member () for adjusting the position of the platform () laterally relative to the base (); the adjustment assembly being configured so that the platform () can be urged to move laterally in a direction along a first axis responsive to the deflection member () being urged to move in a direction along a second axis, the second axis being substantially not parallel to the first direction. 113-. (canceled)14. A press apparatus suitable for generating ultra-high pressure , comprising at least two load assemblies attached to a press frame , arranged to be capable of cooperatively generating an applied load on a reaction volume , and each comprising an adjustment assembly comprising:a platform moveably coupled to a base comprising a ram of a hydraulic cylinder; andan adjustment mechanism comprising a pair of deflection members for adjusting the position of the platform laterally relative to the base; the base comprising a pair of base contact surfaces, the platform comprising a pair of platform contact surfaces, each abutting a respective deflection member; each deflection member accommodated between respective platform and base contact surfaces;an anvil member coupled to each platform;the adjustment assembly being configured so that the platform is capable of being urged to move laterally in a direction along a first axis responsive to the deflection members being urged to move in a direction along a second axis, the second axis being not parallel to the first direction; in which the platform and base contact surfaces are configured such that the deflection members are canted in relation to a lateral plane defined by the first and second axes.15. A press apparatus as claimed in claim 14 , in which the deflection members are canted at an angle of at least 50 degrees and at most 65 degrees to the lateral plane.16. A press apparatus as claimed in ...

Multi-Heater System For Growing High Quality Diamond And A Method For Growing The Same

Disclosed herein is an apparatus and method for growing a diamond. The apparatus for growing a diamond comprises: a reaction cell that is configured to grow the diamond therein; a main heater including a main heating surface that is arranged along a first inner surface of the reaction cell; and a sub-heater including a sub-heating surface that is arranged along a second inner surface of the reaction cell, the second inner surface being non-parallel with the first inner surface.

High-temperature high-pressure presses (hthp) presses, systems for hthp presses and related methods

A press, an automated loading system for a press and related methods are provided including a loading system having a first assembly configured to carry a reaction cell to an anvil of a press base and a second assembly configured to assist in positioning and orientating the reaction cell on the anvil. In one embodiment, the first assembly may include a trolley displaceable along a guide member to carry the reaction cell to the anvil. The first and second assemblies may each include guide members that are displaceable relative to the anvil that are configured to position the reaction cell at a desired location and orientation on the anvil. In one embodiment, each of the guide members include arms that engage distinct sides of a cubic reaction cell. A clearing mechanism may also be incorporated to clear the surface of the anvil during operation of the system.

COMBINED FIELD ASSISTED SINTERING TECHNIQUES AND HTHP SINTERING TECHNIQUES FOR FORMING POLYCRYSTALLINE DIAMOND COMPACTS AND EARTH-BORING TOOLS

Methods of forming polycrystalline diamond compacts include employing field assisted sintering techniques with high temperature and high pressure sintering techniques. For example, a particle mixture that includes diamond particles may be sintered by subjecting the particle mixture to a high temperature and high pressure sintering cycle, and pulsing direct electrical current through the particle mixture during at least a portion of the high temperature and high pressure sintering cycle. The polycrystalline diamond compacts may be used to form cutting elements for earth-boring tools. Sintering systems are configured to perform such sintering processes. 1. A method of using a sintering system , comprising:disposing a particle mixture to be compacted within a container of a pressure cell during a sintering cycle;increasing a pressure within the pressure cell to at least about 5.0 GPa;increasing a temperature within the pressure cell to at least about 1,300° C. by heating with at least one heating device external to the container;passing an electrical current through an electrically conductive pathway while the pressure cell is at the pressure of at least about 5.0 GPa and the temperature of least about 1,300° C., the electrically conductive pathway including a first segment extending to a first side of the pressure cell, the container, the particle mixture within the container, and a second segment extending to a second side of the pressure cell.2. The method of claim 1 , wherein subjecting the particle mixture and the container to the HTHP sintering cycle comprises subjecting the particle mixture and the container to a temperature of about 1 claim 1 ,600° C. or less and a pressure of at least about 6.5 GPa.3. The method of claim 1 , wherein passing the electrical current through the electrically conductive pathway while the pressure cell is at the pressure of at least about 5.0 GPa and the temperature of least about 1 claim 1 ,300° C. comprises pulsing direct ...

Molecularly doped nanodiamond

A method of making molecularly doped nanodiamond. A versatile method for doping diamond by adding dopants into a carbon precursor and producing diamond at high pressure, high temperature conditions. Molecularly doped nanodiamonds that have direct incorporation of dopants and therefore without the need for ion implantation. Molecularly-doped diamonds that have fewer lattice defects than those made with ion implantation. 1. A method of making molecularly doped nanodiamond , comprising the steps of:adding a dopant to a sol-gel precursor;synthesizing via sol-gel synthesis a doped amorphous carbon aerogel comprising an open pore network;drying the doped amorphous carbon aerogel;sintering the doped amorphous carbon aerogel;preserving the open pore network;loading the doped amorphous carbon aerogel into a diamond anvil cell;forming a sealed chamber around the doped amorphous carbon aerogel;flowing a noble gas into the sealed chamber;liquefying the noble gas by condensation;allowing the liquefied noble gas to fill the open pore network of the doped amorphous carbon aerogel;pressurizing the diamond anvil cell;heating the doped amorphous carbon aerogel; andtransforming the doped amorphous carbon aerogel into molecularly doped nanodiamond.2. The method of making molecularly doped nanodiamond of wherein the noble gas is Ar.3. The method of making molecularly doped nanodiamond of wherein the noble gas is one selected from the group consisting of Kr claim 1 , Xe claim 1 , and Ne.4. The method of making molecularly doped nanodiamond of wherein the step of liquefying the noble gas by condensation comprises condensing the noble gas with liquid nitrogen.5. The method of making molecularly doped nanodiamond of wherein the step of liquefying the noble gas by condensation comprises condensing the noble gas with a cryogen.6. The method of making molecularly doped nanodiamond of wherein the step of pressurizing the diamond anvil cell comprises pressures ≥20 Gpa.7. The method of making ...

Polycrystalline Diamond and Method for Manufacturing Same, Scribe Tool, Scribe Wheel, Dresser, Rotating Tool, Wire Drawing Die, Cutting Tool, Electrode, and Processing Method Using Polycrystalline Diamond

Provided is polycrystalline diamond having a diamond single phase as basic composition, in which the polycrystalline diamond includes a plurality of crystal grains and contains boron, hydrogen, oxygen, and the remainder including carbon and trace impurities; the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of the boron is present in an isolated substitutional type; hydrogen and oxygen are present in an isolated substitutional type or an interstitial type in the crystal grains; each of the crystal grains has a grain size of less than or equal to 500 nm; and the polycrystalline diamond has a surface covered with a protective film. 1. Polycrystalline diamond having a diamond single phase as basic composition , whereinthe polycrystalline diamond includes a plurality of crystal grains,the polycrystalline diamond contains boron, hydrogen, oxygen, and a remainder containing carbon and trace impurities,the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of the boron is present in an isolated substitutional type,the hydrogen and the oxygen are present in an isolated substitutional type or an interstitial type in the crystal grains,each of the crystal grains has a grain size of less than or equal to 500 nm, andthe polycrystalline diamond has a surface covered with a protective film.2. The polycrystalline diamond according to claim 1 , wherein greater than or equal to 99 atomic % of the boron is present in an isolated substitutional type in the crystal grains.3. The polycrystalline diamond according to claim 1 , wherein the boron has an atomic concentration of greater than or equal to 1×10cmand less than or equal to 1×10cm.4. The polycrystalline diamond according to claim 1 , wherein the hydrogen has an atomic concentration of greater than or equal to 1×10cmand less than or equal to 1×10cm.5. The polycrystalline diamond according to claim 1 , wherein the oxygen has an ...

ROLLER CUTTING ELEMENT CONSTRUCTION

Roller cutters comprise a diamond-bonded body joined to an infiltration substrate. An extension is joined to the substrate and includes first section having a diameter sized the same as the substrate, and an integral second section having a diameter smaller than the substrate. The extension is joined to the substrate during an HPHT process. The first section has a thickness greater than that of the infiltration substrate. The second section has an axial length greater than the combined thickness of the substrate and the first section. The extension has a strength and/or toughness greater than the substrate as a result of its material composition, e.g., the amount of binder phase material and/or the size of hard phase material. The roller cutter is rotatably disposed within a pocket internal cavity, wherein the pocket is attached to a 1. A roller cutting element comprising:a diamond-body comprising a matrix phase of intercrystalline bonded diamond, and a plurality of interstitial regions dispersed within the matrix phase;an infiltration substrate having a first diameter attached to the diamond body; andan extension attached to the infiltration substrate, the extension having a first section having the first diameter and a second section having a second diameter less than the first diameter, wherein the first section is attached to the infiltration substrate, and wherein the second section is integral with the first section.2. The roller cutting element as recited in further comprising a sleeve attached thereto claim 1 , the sleeve including a cavity accommodating the second section of the extension therein claim 1 , the cavity having an opening that is adjacent the first section of the extension.3. The roller cutting element as recited in wherein the infiltration substrate and the extension are selected from the group consisting of metallic materials claim 1 , ceramic materials claim 1 , cermet materials claim 1 , and combinations of the same claim 1 , wherein the ...

SUPERHARD CONSTRUCTIONS & METHODS OF MAKING SAME

A super hard polycrystalline construction is disclosed as comprising a body of super hard material having a first fraction of super hard grains in a matrix of a second fraction of super hard grains. The average grain size of the first fraction is between around 1.5 to around 10 times the average grain size of the second fraction and the first fraction comprises around 5 vol % to around 30 vol % of the grains of super hard material in the body. 1. A super hard polycrystalline construction comprising:a body of super hard material having a first fraction of super hard grains in a matrix of a second fraction of super hard grains; wherein:the average grain size of the first fraction is between around 1.5 to around 10 times the average grain size of the second fraction; andthe first fraction comprises around 5 vol % to around 30 vol % of the grains of super hard material in the body.2. The construction of claim 1 , wherein the average grain size of the first fraction is between around 2 to around 7 times the average grain size of the second fraction.3. The construction of claim 1 , wherein the first fraction of super hard grains comprises any one or more of single crystal particles or polycrystalline agglomerates of diamond grit claim 1 , CVD crushed particles claim 1 , diamond obtained by PVD methods claim 1 , natural diamond claim 1 , diamond of synthetic origin claim 1 , or cBN.4. The construction of claim 1 , wherein the second fraction of super hard grains comprises diamond grains and/or cBN gains.5. The construction of claim 1 , wherein the second fraction of super hard grains comprises a plurality of intergrown grains of super hard material.6. The construction of claim 1 , wherein the body has at least one region substantially free of a catalyst material for diamond claim 1 , said region forming a thermally stable region.7. The construction of claim 6 , wherein the body comprises at most 3 weight percent of catalyst material for diamond.8. The construction of claim ...

Diamond

The present invention relates to an HPHT method for synthesizing single crystal diamond, wherein a single crystal diamond seed having an aspect ratio of at least 1.5 is utilised. Single crystal diamond seeds having an aspect ratio of at least 1.5 and synthetic single crystal diamond which may be obtained by the method recited are also described. The growth surface is substantially aligned along a <100> or <110> direction in the plane of the growth surface.

Large single crystal diamonds

The present invention relates to an HPHT method for synthesizing single crystal diamond, wherein a single crystal diamond seed having an aspect ratio of at least 1.5 is utilised. Single crystal diamond seeds having an aspect ratio of at least 1.5 and synthetic single crystal diamond which may be obtained by the method recited are also described. The growth surface is substantially aligned along a <100> or <110> direction in the plane of the growth surface.

EASILY CRUSHABLE DIAMOND ABRASIVE GRAINS AND METHOD FOR MANUFACTURING SAME

[Technical Problem]To provide diamond grits with enhanced friability, and method for the production comprising in combination internal microcracks within the diamond particle and surface irregularities, with or without a layer of non-diamond carbon covering the particle surface. 1. Easy-fracturing diamond grits with enhanced friability , consisting of diamond particles synthesized by a static ultrahigh pressure-high temperature process , comprising both microcracks generated within the particles due to the effect of heating , and surface irregularities generated on the particles by oxidizing etching at elevated temperatures.2. The grits as claimed in claim 1 , further comprising on the particle surface a layer of non-diamond carbon converted from the base diamond particle.3. The grits as claimed in claim 2 , in which the non-diamond carbon content is 0.2% or more relative to the combined mass of diamond and non-diamond.4. The grits as claimed in claim 2 , in which the non-diamond carbon content ranges from 0.5 and 10% relative to the combined mass of diamond and non-diamond.5. The grits as claimed in claim 1 , in which said diamond particles by nature is a size-sorted diamond powder product with a Daverage size of 150 μm or less.6. The grits as claimed claim 1 , comprising a B.E.T. specific surface area 3.5 times or more as large as the surface of assumed (reference) sphere.7. The grits as claimed in claim 1 , in which said particles have hydrophilic surface.8. The grits as claimed in claim 1 , in which said particles exhibit a controlled electrical resistance that is based on the non-diamond carbon phase.9. The grits as claimed in claim 1 , in which said particles as a volume compacted at 10 MPa exhibit an electrical resistivity of or greater than 10Ω/m.10. The grits as claimed in claim 1 , in which said particles as a volume compacted at 10 MPa exhibit an electrical resistivity less than 10Ω/m.11. A method for producing the grits as claimed in claim 1 , comprising ...

Wire drawing die

Composite wire drawing die construction is described in which a centrally-located mass of diamond, cubic boron nitride or a polycrystalline mixture thereof defines at least the throat of the wire drawing hole, the mass being flanked or girded by at least one mass of metal bonded carbide that is directly bonded thereto. The composite is readily ground into the form of a solid of revolution. In the preferred construction (for dies for drawing 0.008 inches diameter wire and larger) a composite assembly includes at least one high strength metal ring that is press fitted around a composite body or sub-assembly comprising a polycrystalline mass of diamond girded by a metal-bonded carbide jacket. [US3831428A]

Sintered diamond blank and method for making it

FIELD: materials used for making cutting tools. SUBSTANCE: blank includes carburized carbide substrate such as WC - Co with slight waviness and sintered body having layer of diamond grains and binder. Thickness of layer of sintered body of diamond grains is in range 0.05 - 0.4 mm; its area in range of such thickness consists at least 50% of its whole surface area. Sintered body includes as binder Co diffused from carburized carbide substrate. EFFECT: possibility for making material for high-strength diamond compact tool. 6 cl, 4 dwg, 1 tbl ЗЗ7УОГСС ПЧ сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 210 488 ' (51) МПК? 13) С2 В 240 3/06 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99116257102, 28.07.1999 (24) Дата начала действия патента: 28.07.1999 (30) Приоритет: 31.07.1998 УР 216660/1998 (43) Дата публикации заявки: 20.05.2001 (46) Дата публикации: 20.08.2003 (56) Ссылки: 4$ 3745623, 17.07.1973. КУ 2008187 СЛ, 28.02.1994. ЕР 0786300 АЛ, 30.07.1997. (98) Адрес для переписки: 129010, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. Е.В.Томской, рег. № 0106 (71) Заявитель: СУМИТОМО ЭЛЕКТРИК ИНДАСТРИЗ, ЛТД. (УР) (72) Изобретатель: ЙОСИДА Кацухито (+Р), АСАНО Митинари (/Р), СИРАИСИ Дзунити (УР), НАКАИ Тецуо (.Р) (73) Патентообладатель: СУМИТОМО ЭЛЕКТРИК ИНДАСТРИЗ, ЛТД. (Р) (74) Патентный поверенный: Томская Елена Владимировна (54) АЛМАЗНАЯ СПЕЧЕННАЯ ЗАГОТОВКА И СПОСОБ ЕЕ ПОЛУЧЕНИЯ (57) Изобретение относится к материалам для режущего инструмента. Заготовка содержит цементированную карбидную подложку типа \/С-Со, имеющую легкую волнистость, и спеченное тело в виде слоя из алмазных зерен и связующего. Толщина слоя спеченного тела из алмазных зерен составляет от 0,05 до 0,4 мм, его площадь в пределах этой толщины занимает по меньшей мере 50% всей площади, а в качестве связующего оно содержит Со, диффундировавший из цементированной карбидной подложки. Изобретение позволяет создать ...

Высокотвердый углеродный материал и способ его получения

1. Способ получения высокотвердого углеродного материала, включающий воздействие на молекулярный фуллерен Сили фуллеренсодержащую сажу давлением и температурой, отличающийся тем, что к молекулярному фуллерену Сили фуллеренсодержащей саже добавляют серосодержащее соединение, а воздействие ведут при давлении от 0,2 до 12 ГПа и температуре от 0 до 2000°С.2. Способ по п. 1, отличающийся тем, что в качестве серосодержащего соединения используют сероуглерод.3. Способ по п. 1, отличающийся тем, что в качестве серосодержащего соединения используют соединение из группы меркаптанов или продукт взаимодействия соединения из группы меркаптанов с элементарной серой.4. Высокотвердый углеродный материал, полученный способом по п. 1, характеризующийся тем, что его структура образована связанными между собой ковалентными связями слоями двумерно поляризованных вдоль оси вращения второго порядка молекул фуллерена. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2013 140 598 A (51) МПК C01B 31/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013140598/05, 03.09.2013 Приоритет(ы): (22) Дата подачи заявки: 03.09.2013 (43) Дата публикации заявки: 10.03.2015 Бюл. № 7 (72) Автор(ы): Бланк Владимир Давыдович (RU), Мордкович Владимир Зальманович (RU), Перфилов Сергей Алексеевич (RU), Попов Михаил Юрьевич (RU) A 2 0 1 3 1 4 0 5 9 8 R U Стр.: 1 A (57) Формула изобретения 1. Способ получения высокотвердого углеродного материала, включающий воздействие на молекулярный фуллерен С60 или фуллеренсодержащую сажу давлением и температурой, отличающийся тем, что к молекулярному фуллерену С60 или фуллеренсодержащей саже добавляют серосодержащее соединение, а воздействие ведут при давлении от 0,2 до 12 ГПа и температуре от 0 до 2000°С. 2. Способ по п. 1, отличающийся тем, что в качестве серосодержащего соединения используют сероуглерод. 3. Способ по п. 1, отличающийся тем, что в качестве серосодержащего соединения используют соединение из группы ...

High-hardness carbon material and method for production thereof

FIELD: chemistry.SUBSTANCE: molecular fullerene Cor fullerene-containing soot with an additive of a sulphur-containing compound is subjected to pressure of 0.2-12 GPa and temperature of 0-2000°C. The sulphur-containing compound used is carbon sulphide, a mercaptan group compound or a product of reacting a mercaptan group compound and elementary sulphur. The structure of the obtained high-hardness carbon material is formed by covalently bonded layers of fullerene molecules which are two-dimensionally polarised along a second-order axis of rotation.EFFECT: hardness of the obtained material is greater than 10 GPa.4 cl, 5 dwg, 6 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 543 891 C1 (51) МПК C01B 31/06 (2006.01) B82Y 40/00 (2011.01) B82B 1/00 (2006.01) B82B 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013140598/05, 03.09.2013 (24) Дата начала отсчета срока действия патента: 03.09.2013 (45) Опубликовано: 10.03.2015 Бюл. № 7 (56) Список документов, цитированных в отчете о поиске: US 6245312 B1, 12.01.2001. RU 2127225 2 5 4 3 8 9 1 R U (54) ВЫСОКОТВЕРДЫЙ УГЛЕРОДНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОЛУЧЕНИЯ (57) Реферат: Изобретение предназначено для сероуглерод, соединение из группы меркаптанов аэрокосмической отрасли, оборонной или продукт взаимодействия соединения из промышленности и обработки твёрдых и группы меркаптанов с элементарной серой. сверхтвёрдых материалов. На молекулярный Структура полученного высокотвердого фуллерен С60 или фуллеренсодержащую сажу с углеродного материала образована связанными между собой ковалентными связями слоями добавкой серосодержащего соединения двумерно-поляризованных вдоль оси вращения воздействуют давлением от 0,2 до 12 ГПа и второго порядка молекул фуллерена. Твёрдость температурой от 0 до 2000 oС. В качестве полученного материала более 10 ГПа. 2 н. и 2 з.п. серосодержащего соединения используют ф-лы, 5 ил., 6 пр. Стр.: 1 C 1 C 1 Адрес для переписки: 142190, Москва, ...

Synthesizing method for cubic boron nitride single crystal

The monocrystalline state diamond particles and its manufacturing method of the particle containing cubic boron nitride

提供热稳定性优异的单晶态金刚石颗粒。单晶态金刚石颗粒含有立方晶氮化硼颗粒。优选的是，立方晶氮化硼颗粒存在于含立方晶氮化硼颗粒的单晶态金刚石颗粒的内部和/或表面，单晶态金刚石颗粒的平均粒径为500μm以下，立方晶氮化硼颗粒的平均粒径为0.05～100μm。

A method of producing ultra-hard abrasive particles

본 발명은, 복수개의 이산된 초경질 연마입자의 제조방법은, 하나 이상의 초경질 연마입자, 연마입자의 전구체, 및 연마입자의 용매/촉매 또는 상기 용매/촉매의 전구체를 각각 포함하는, 복수개의 과립(granule)을 제공하는 단계; 인접하는 과립 사이에 분리 매질을 갖는 과립을 고압/고온 기구의 반응대역에 배치하는 단계; 반응대역의 내용물을, 초경질 연마입자가 결정학적으로 안정해지는 시점에서의 상승된 온도 및 압력 조건에 적용시키는 단계; 상기 처리된 물질을 반응대역으로부터 회수하는 단계; 및 상기 처리된 물질에서 분리 매질을 제거하여 복수개의 이산된 연마입자를 제조하는 단계를 포함하는, 복수개의 이산된 초경질 연마입자의 제조방법에 관한 것이다. The present invention relates to a method for producing a plurality of discrete superhard abrasive particles, each of which comprises one or more ultrahard abrasive particles, a precursor of abrasive particles, and a solvent / catalyst of the abrasive particles or a precursor of the solvent / catalyst, respectively. Providing granules; Placing the granules having a separation medium between adjacent granules in the reaction zone of the high pressure / high temperature apparatus; Applying the contents of the reaction zone to elevated temperature and pressure conditions at which point the ultrahard abrasive particles become crystallographically stable; Recovering the treated material from the reaction zone; And removing the separation medium from the treated material to produce a plurality of discrete abrasive particles.

Ultrahigh Pressure Treatment Device

Method for preventing breakage of ultra-high pressure generating apparatus

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Cutting tool made of diamond-based ultra-high pressure sintered material with excellent chipping resistance and its manufacturing method

Multihole-punch ball-type-installation for generating high pressures and temperatures

FIELD: physico-chemical modification of substances under high pressures and temperatures. SUBSTANCE: installation has foundation supporting frame with inner spherical space. Frame consists of two stacking parts and encloses spherical shell, two parts of which are secured to corresponding parts of the frame thereby forming primary-pressure chamber with two separated hollows. Shell parts enclose punches, their outer parts being in the form of truncated pyramids with great spherical bases and positioned in a spaced relation to side surfaces. Truncated surfaces of pyramids form a space where inner punches are installed in contact with inner surfaces of outer punches through insulating spacers. Side surfaces of inner punches form gaps where deformable inserts are disposed, whereas inner surfaces of inner punches form compression chamber with disposed therein deformable container made of heat and electric insulating material with inner cavity for receiving material to be processed, height to width ratio of the compression chamber lying in the range 1.03 to 1.4. Inside the shell, there are means to overlap gaps between side surfaces of outer punches, which are electrically insulated from the latter. Arrangements are also available providing heating and measuring circuits and therefore automation of the overall process, arrangements for cooling outer and inner punches, and means for convenient removal and installation of deformable container with material. EFFECT: improved structure of installation. 43 cl, 27 dwg 8$4$512140Сс ПЧ] ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ “” 2 077 375' 13) Сл В 01 + 3/00, 6/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94013122/25, 12.04.1994 (46) Дата публикации: 20.04.1997 (56) Ссылки: 1. Г.С.Бобровничий, Л.Ю.Максимов. Сферический многопуансонный аппарат (71) Заявитель: Российско-шведское совместное предприятие "ХОРОС" (72) Изобретатель: Бобровничий Г.С. сверхвысокого давления. ...

Method of production of color diamonds in conditions of high pressure and temperatures

FIELD: production of color diamonds. SUBSTANCE: the invention is pertaining to the field of production of fantasy neon yellow-green diamonds of precious quality produced from the pale (discolored) or so-called "brown" diamonds of the lowest quality. The method provides for placement of a pale natural diamond in the medium capable to transfer the pressure, which then is mold into a "tablet". Then the tablet is placed in the high-pressure press (HP/HT) and exposed to machining at an increased pressure and temperature being within the range of graphite stability or a diamond being on the phase diagram of carbon for the period of time necessary for improvement of a color of the mentioned diamond. In the end the diamond is removed from press. The indicated method ensures production of diamonds of an attractive yellowish-green or yellow-green and neon yellow-green colors. EFFECT: the invention ensures production of diamonds of attractive yellow-green colors. 22 cl, 4 ex, 2 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2 252 066 (13) C2 B 01 J 3/06, C 01 B 31/06, C 30 B 29/04 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002107310/15, 25.08.2000 (72) Àâòîð(û): ÝÍÒÎÍÈ Òîìàñ Ðè÷àðä (US), ÂÀÃÀÐÀËÈ Ñóðåø Øàíêàðàïïà (US) (24) Äàòà íà÷àëà äåéñòâè ïàòåíòà: 25.08.2000 (30) Ïðèîðèòåò: 25.08.1999 US 60/150,979 (73) Ïàòåíòîîáëàäàòåëü(ëè): Äàéìîíä Èííîâåéøíç Èíê. (US) R U (43) Äàòà ïóáëèêàöèè çà âêè: 27.10.2003 (45) Îïóáëèêîâàíî: 20.05.2005 Áþë. ¹ 14 2 2 5 2 0 6 6 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 4124690 À, 07.11.1978. US 3134739 A, 26.05.1964. CHRENKO R.M. et al. Transformations of the state of nitrogen in diamond. NATURE. Vol. 270, 1977, p. 141-144. EVANS Ò. et al. Changes in the defect structure of diamond due to high temperature + high pressure treatment. Proceedings of the Royal Society of London. A., vol. 344, 1975, p.111-130. 2 2 5 2 0 6 6 R U ...

Polycrystalline diamond and manufacture method thereof

本发明涉及一种纳米多晶金刚石(1)，其包括碳和多种非碳杂质。每一种所述杂质的浓度均等于或小于0.01质量%，并且该纳米多晶金刚石(1)的晶粒尺寸（最大长度）至多为500nm。该纳米多晶金刚石(1)可以由以下方法制造：制备杂质浓度至多为0.01质量%的石墨，然后使该石墨经受高温和极高的压力，从而将所述石墨转化为金刚石。

High temperature/high pressure colour change of diamond

본 발명은 갈색 Ⅱa형 다이아몬드의 칼라를 갈색에서 무색으로 변화시키기 위한 방법을 제공한다. 상기 방법은 칼라 변화를 제공하기 위하여 고온 및 고압의 선택된 조건들로 상기 다이아몬드를 처리하는 것을 포함한다. The present invention provides a method for changing the color of brown IIa diamond from brown to colorless. The method includes treating the diamond with selected conditions of high temperature and high pressure to provide color change. 갈색다이아몬드, 열전달매체, 자외선/가시광선 흡수스펙트럼, 갈색, 무색 Brown diamond, heat transfer medium, UV / visible spectrum, brown, colorless

Manufacturing method of cubic boron nitride

육방정 질화붕소를 주기율표의 Ia 및 IIa족 금속 원소들의 아미드 및 이미드 중에서 선택된 한가지 이상의 화합물 존재 하에, 또는 이들과 Ia, IIa, IIIa, VIa, VIIa, VIII, IIb 및 IIIb족 금속 원소 중에서 선택된 한가지 이상의 금속의 공동 존재 하에, 입방정 질화붕소가 안정한 온도 및 압력 조건 하에서 유지시킴으로써 육방정 질화붕소를 입방정 질화붕소로 변환시킨다. Hexagonal boron nitride is present in the presence of one or more compounds selected from amides and imides of Group Ia and IIa metal elements of the periodic table, or one selected from Group Ia, IIa, IIIa, VIa, VIIa, VIII, IIb and IIIb metal elements. In the presence of a cavity of the above metals, cubic boron nitride is converted to cubic boron nitride by maintaining the cubic boron nitride under stable temperature and pressure conditions.

Method of manufacturing polycrystalline diamonds

Arc top hammer type four-side top ultrahigh-pressure device

一种弧形顶锤式四面顶超高压装置，所述装置包括类圆筒型结构的压缸和通过过盈配合安装在压缸外侧的支撑环，以及通过过盈配合安装在支撑环外侧的对中支撑环，所述压缸的上下两端的中部分别设置有相互对称的顶锤，且所述对中支撑环的两侧分别设置径向且相互对称环抱的弧形顶锤。本发明使用上下及左右两侧的四个顶锤对压缸加压，压受力更加接近“静水压力”，使压缸能够承受更大的压力，具有更好的保压性能的同时，还保持了两面顶压缸的保温性能，而且侧面使用弧形顶锤加压，不会存在预应力松弛和蠕变的现象，使压缸在工作时一直处在稳定压力作用下，疲劳强度高，不容易破坏，加压的稳定性更高，具有非常理想的技术效果。

Hard cutting tool

Process and apparatus for growing a crystalline gallium-containing nitride using an azide mineralizer

An apparatus and associated method for large-scale manufacturing of gallium nitride is provided. The apparatus comprises a large diameter autoclave and a raw material basket. Methods include metered addition of dopants in the raw material and control of the atmosphere during crystal growth. The apparatus and methods are scalable up to very large volumes and are cost effective.

Production of diamonds under action of the high pressure and temperature

FIELD: production of the jewelry quality diamonds from the natural low-grade undecoratively colored diamonds. SUBSTANCE: the invention is pertaining to production of the diamonds of the jewelry quality from the natural low grade undecoratively colored so-called "brown" diamonds, especially from the diamonds of IIa type and IaA/B type, in which nitrogen forms predominantly B-center for improvement of heir color. The invention provides for realization of the rough faceting and molding of the undecoratively colored natural diamond for giving it the streamline form to avoid its breakup in the press of the high-pressure and heating (HP/HT press). The indicated undecoratively colored natural diamond is put in the pressure transferring medium, which then is compacted into the tablet. Then the tablet is put in the HP/HT squeezer under the high pressure and temperature kept in the field of stability of the blacklead or the field of stability of the diamond of the phase diagram of carbon for the time duration sufficient for improvement of the color of the diamond. After the operation is terminated extract the diamond from the squeezer. The method ensures production of the colorless and decoratively colored diamonds. EFFECT: the invention ensures production of the colorless and decoratively colored diamonds. 25 cl, 6 ex, 2 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 279 908 (13) C2 (51) ÌÏÊ B01J 3/00 (2006.01) C01B 31/06 (2006.01) C30B 29/04 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003106575/15, 08.08.2001 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 08.08.2001 (30) Êîíâåíöèîííûé ïðèîðèòåò: 11.08.2000 (ïï.1-25) US 60/224,485 (43) Äàòà ïóáëèêàöèè çà âêè: 27.07.2004 R U (72) Àâòîð(û): ÝÍÒÎÍÈ Òîìàñ Ð. (US), ÁÀÍÕÎËÜÖÅÐ Óèëëü ì Ô. (US), ÊÝÉÑÈ Äæîí Ê. (US), ÊÀÄÈÎÃËÓ ßâóç (US), ÑÌÈÒ Àëàí Ê. (US), ÄÆÅÊÑÎÍ Óèëëü ì Ý. (US), ÂÀÃÀÐÀËÈ Ñóðåø Ñ. (US), ÓÝÁÁ Ñòèâåí Â. (US) (45) ...

Polycrystalline diamond and manufacturing method therefor

This nano-polycrystalline diamond (1) comprises carbon and a plurality of non-carbon impurities. The concentration of each of said impurities is less than or equal to 0.01% by mass, and the crystal grain size (maximum length) of said nano-polycrystalline diamond (1) is at most 500 nm. Said nano-polycrystalline diamond (1) can be fabricated by preparing graphite with an impurity concentration of at most 0.01% by mass and then converting said graphite to diamond by subjecting said graphite to high temperatures and extremely high pressures.

Method of making an abrasive compact

The invention provides a method of making an abrasive compact using conventional compact synthesis conditions. The method is characterised by the use of an ultra-hard abrasive particle mass comprising at least 25 percent by mass of ultra-hard abrasive particles having an average particle size in the range 10 to 100 microns, and consisting of particles having at least three different average particle sizes, and at least 4 percent by mass of ultra-hard abrasive particles having an average particle size of less than 10 microns. The abrasive compact is preferably a diamond compact.

Synthesis of diamond and reaction vessels therefor

Self-sharpening diamond and preparation method thereof

本发明属于金刚石技术领域，具体涉及一种自锐性金刚石及其制备方法。本发明提供的自锐性金刚石由石墨柱经渗氮处理后制备得到；所述石墨柱包括以下质量百分含量的组分：28～31％钴，9～12％镍，1.8～2％铈，0.8～1％硼，55～59％石墨。在本发明中，特定含量的铈使自锐性金刚石颗粒表面粗糙，使自锐性金刚石在磨削过程中以微刃破碎的方式脱落露出新的锋利面，使自锐性金刚石保持着持续锋利面，提高了自锐性金刚石的利用率；同时本发明提供的自锐性金刚石在制备过程中经过了渗氮处理，使氮原子在金刚石的合成过程中替换了金刚石中部分碳原子，降低了自锐性金刚石的强度。

Large diamond synthesis method

Method of change of diamond color at high temperature and high pressure

FIELD: treatment of natural diamond for change of its color. SUBSTANCE: proposed method includes the following stages: (i)forming of reaction mass at presence of diamond pressure-transmitting medium which fully surrounds it; (ii) action on reaction mass by high temperature and pressure during required period of time; proposed diamond is brown diamond, type IIa; its color is changed from brown to rose by action on reaction mass by temperature from 1900°C to 2300°C at pressure from 6.9 GPa to 8.5 GPa. EFFECT: enhanced efficiency of enriching diamond color keeping its crystals intact. 30 cl, 4 dwg, 1 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 293 601 (13) C2 (51) ÌÏÊ B01J 3/06 (2006.01) C01B 31/06 (2006.01) C30B 29/04 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002129105/15, 02.04.2001 (72) Àâòîð(û): ÁÅÐÍÑ Ðîáåðò ×àðëüç (ZA), ÔÈØÅÐ Äýâèä (GB), ÑÏÈÒÑ Ðåéìîíä Ýíòîíè (ZA) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 02.04.2001 (73) Ïàòåíòîîáëàäàòåëü(è): ÝËÅÌÅÍÒ ÑÈÊÑ ÒÅÊÍÎËÎÄÆÈÇ (ÏÒÈ) ËÒÄ. (ZA) (43) Äàòà ïóáëèêàöèè çà âêè: 27.03.2004 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 31.03.2000 GB 0007887.3 (45) Îïóáëèêîâàíî: 20.02.2007 Áþë. ¹ 5 2 2 9 3 6 0 1 2 2 9 3 6 0 1 R U (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 31.10.2002 C 2 C 2 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: ALAN Ò. COLLINS et al. "Color changes produced in natural brown diamonds by highpressure, high-temperature treatment", Diamond and Related Materials, vol.9, no.2, 2000, p.113-132. RU 2145365 C1, 10.02.2000. NIKITIN A.V. et al. "The effect of heat and pressure on certain physical properties of diamonds", Soviet Physical-Doklady, vol.13, no.9, 1969, (ñì. ïðîä.) (86) Çà âêà PCT: IB 01/00525 (02.04.2001) (87) Ïóáëèêàöè PCT: WO 01/72404 (04.10.2001) Àäðåñ äë ïåðåïèñêè: 191186, Ñàíêò-Ïåòåðáóðã, à/ 230, "ÀÐÑÏÀÒÅÍÒ", ïàò.ïîâ. Â.Ì.Ðûáàêîâó, ðåã. ¹ 90 (54) ÑÏÎÑÎÁ ÈÇÌÅÍÅÍÈß ÖÂÅÒÀ ÀËÌÀÇÀ ÏÐÈ ÂÛÑÎÊÎÉ ...

Diamond sintered body and its production

Methods of forming polycrystalline diamond elements, polycrystalline diamond elements, and earth-boring tools carrying such polycrystalline diamond elements

Methods of forming polycrystalline diamond elements include forming a polycrystalline diamond element. A Group VIII metal or alloy catalyst is employed to form the polycrystalline diamond compact table at a pressure of at least about 6.5 GPa or greater. The catalyst is then removed from at least a portion of the table to a depth from a working surface thereof, and may be removed from the entirety of the table. Polycrystalline diamond elements include such polycrystalline diamond compact tables. Earth-boring tools include such polycrystalline diamond elements carried thereon and employed as cutting elements.

Cutting elements and earth-boring tools including a polycrystalline diamond material

Methods of forming polycrystalline diamond include encapsulating diamond particles and a hydrocarbon substance in a canister, and subjecting the encapsulated diamond particles and hydrocarbon substance to a pressure and a temperature sufficient to form inter-granular bonds between the diamond particles. Cutting elements for use in an earth-boring tool include a polycrystalline diamond material formed by such processes. Earth-boring tools include such cutting elements.

Polycrystalline diamond constructions having improved thermal stability

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.

Method of forming a thermally stable diamond cutting element

High temperature high pressure apparatus

High temperature high pressure apparatus

Diamond synthesis

Reaction vessel for high pressure apparatus

AN IMPROVED REACTION VESSEL CONSTRUCTION FOR THE COMPACTION OF A MASS OF DENSE, STRONG PARTICLES E.G. DIAMOND IS DISCLOSED. THIS IMPROVED CONSTRUCTION EMBODIES A MECHANICALLY UNSTABLE STRUCTURAL SYSTEM TO PREVENT THE FORMATION OF PRESSURE-SUPPORTING GEOMETRIES WITHIN OR ENCIRCLING THE MASS.

High thermal conductivity substrate

A high thermal conductivity substrate is formed by making a sintered diamond composite and thereafter modifying the electrical properties of the composite by leaching graphite and other non-diamond materials from the composite and subsequently infusing the leached composite with material having known electrical properties. Alternatively, a diamond composite having high thermal conductivity known electrical properties is prepared and subsequently leached to remove graphite and other materials which interfere with the known electrical properties of the composite material.

Manufacture of thermally stable cutting elements

A method of forming a thermally stable cutting element that includes disposing at least a portion of a polycrystalline abrasive body containing a catalyzing material to be leached into a leaching agent; and subjecting the polycrystalline abrasive object to an elevated temperature and pressure is disclosed. Thermally stable cutting elements and systems and other methods for forming thermally stable cutting elements are also disclosed.

Polycrystalline diamond constructions having improved thermal stability

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.

Polycrystalline diamond constructions having improved thermal stability

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 to 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.

High abrasion low stress PDC

A polycrystalline diamond cutting element for use in rock drilling or other operations that requires very high abrasion resistance with high transverse rupture strength at temperatures above 700 degrees centigrade. The cutting element includes a diamond layer that contains pre-sintered polycrystalline diamond agglomerate (PPDA) bonded to a supporting substrate. The PPDA can be made thermally stable and can be selected to produce a cutting element with any desired abrasion resistance characteristic without affecting internal stress.

Device for creating high pressure and temperature

Method for producing grown radioactive diamonds and grown radioactive diamond

FIELD: manufacturing technology. SUBSTANCE: invention relates to the production of synthetic diamonds including an isotope 14 C, possessing β-radiation. Diamonds are iron carbide grown formed directly in the growth chamber from barium carbonate, which is a product of processing spent nuclear fuel and containing in its composition 50–70 % of the isotope 14 C of the total mass of carbon, and not less than 5-fold relative to the total mass of barium carbonate of excess iron. EFFECT: simplified technology for obtaining radioactive diamonds possessing β-radiation, and also the safety of the synthesis process is increased with the possible use of large amounts of the isotope 14 C. 2 cl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 660 872 C1 (51) МПК B01J 3/06 (2006.01) C30B 29/04 (2006.01) C01B 32/26 (2017.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 3/062 (2018.02); B01J 2203/06 (2018.02); B01J 2203/063 (2018.02); B01J 2203/0655 (2018.02); B01J 2203/068 (2018.02); C30B 29/04 (2018.02); C01B 32/26 (2018.02); Y10S 423/11 (2018.02); Y10S 425/026 (2018.02) (21)(22) Заявка: 2017118655, 29.05.2017 29.05.2017 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 29.05.2017 (56) Список документов, цитированных в отчете о поиске: US 2996763А1, 22.08.1961. SU (45) Опубликовано: 10.07.2018 Бюл. № 19 (54) СПОСОБ ПОЛУЧЕНИЯ ВЫРАЩЕННЫХ РАДИОАКТИВНЫХ АЛМАЗОВ И ВЫРАЩЕННЫЙ РАДИОАКТИВНЫЙ АЛМАЗ (57) Реферат: Изобретение относится к области получения массы углерода, и не менее чем 5-кратного по отношению к общей массе карбоната бария синтетических алмазов, включающих изотоп 14С, избытка железа. Тем самым достигается обладающих β-излучением. Алмазы упрощение технологии получения радиоактивных выращиваются из карбида железа, образующегося алмазов, обладающих β-излучением, а также непосредственно в ростовой камере из карбоната повышается безопасность процесса синтеза с бария, являющегося продуктом переработки возможным ...

Device for building up high pressure

An apparatus for producing high pressure comprises a multi-die system (1). Each die (2) is made up of two cooperating parts arranged along a longitudinal centerline (3) of the die (2), one part being a working body (4), the other being a base member (8). The working body (4) is also made up of two parts in the direction essentially perpendicular to the longitudinal centerline (3) of the die (2), the parts being a central insert (21) and an encircling ring (22) both arranged coaxially and capable of relative displacement towards a test sample (7). The surface area of an end (23) of the central insert (21) of the working body (4) approximates to or less (in this case less) than the surface area of the central portion (18) of an end (11) of the working body (4). An end (5) of the working body (4) is arranged for direct cooperation with a solid medium (6) which is plastic under pressure and serves to surround a sample (7) being tested. An end (9) of the base member (8) faces a die driving means (10) common to all dies. The space between other opposing ends (11 and 12) of the working body (4) and the base member (8) is filled with a solid medium (13) plastic under pressure. The surfaces of the ends (11) and (12) are provided with identical annular grooves (14 and 15) respectively, the grooves being filled with a solid medium (20) plastic under pressure.

Self-sharpening diamond and preparation method thereof

本发明属于金刚石技术领域，具体涉及一种自锐性金刚石及其制备方法。本发明提供的自锐性金刚石由石墨柱经渗氮处理后制备得到；所述石墨柱包括以下质量百分含量的组分：28～31％钴，9～12％镍，1.8～2％铈，0.8～1％硼，55～59％石墨。在本发明中，特定含量的铈使自锐性金刚石颗粒表面粗糙，使自锐性金刚石在磨削过程中以微刃破碎的方式脱落露出新的锋利面，使自锐性金刚石保持着持续锋利面，提高了自锐性金刚石的利用率；同时本发明提供的自锐性金刚石在制备过程中经过了渗氮处理，使氮原子在金刚石的合成过程中替换了金刚石中部分碳原子，降低了自锐性金刚石的强度。

Synthesis of diamond

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method of improvement of diamond color at high temperature and high pressure (versions)

FIELD: treatment of diamonds. SUBSTANCE: proposed method includes the following stages: (i) forming of reaction mass at presence of diamond in pressure-transmitting medium fully surrounding the diamond and (ii) action of reaction mass by high temperature and pressure during required period of time; diamond is of IIb type and its color is changed from gray to blue or dark blue or is enriched by action on reaction mass of temperature from 1800°C to 2600°C at pressure of from 6.7 GPa to 9 GPa (first version). Diamond of type II may be also proposed which contains boron and its color is changed to blue or dark blue by action on reaction mass by the same temperature and pressure (second version). EFFECT: improved color of diamond by changing it from gray (brown-gray) to blue or dark blue. 31 cl, 4 dwg, 2 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 293 602 (13) C2 (51) ÌÏÊ B01J 3/06 (2006.01) C01B 31/06 (2006.01) C30B 29/04 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002129106/15, 02.04.2001 (72) Àâòîð(û): ÁÅÐÍÑ Ðîáåðò ×àðëüç (ZA), ÔÈØÅÐ Äýâèä (GB), ÑÏÈÒÑ Ðåéìîíä Ýíòîíè (ZA) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 02.04.2001 (73) Ïàòåíòîîáëàäàòåëü(è): ÝËÅÌÅÍÒ ÑÈÊÑ ÒÅÊÍÎËÎÄÆÈÇ (ÏÒÈ) ËÒÄ. (ZA) (43) Äàòà ïóáëèêàöèè çà âêè: 27.03.2004 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 31.03.2000 GB 0007890.7 (45) Îïóáëèêîâàíî: 20.02.2007 Áþë. ¹ 5 2 2 9 3 6 0 2 2 2 9 3 6 0 2 R U (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 31.10.2002 C 2 C 2 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: ALAN Ò. COLLINS et al. «Color changes produced in natural brown diamonds by highpressure, high-temperature treatment»,. Diamond and Related Materials, vol.9, no.2, 2000, p.113-132. SU 1788700 A1, 20.02.1996. US 4124690 A, 07.11.1978. NIKITIN A.V. et al. «The effect of hear and pressure on certain physical properties of diamonds»,. Soviet Physical (ñì. ïðîä.) (86) Çà âêà PCT: IB 01/00526 (02 ...

High-temperature high-pressure preparation process for life diamond

本发明一种生命钻石的高温高压制备工艺，在真空、还原性气氛或惰性气氛中，对人体或动物毛发，所有动植物的组成部分的碳水化合物进行高温处理，从中提取出固态碳；浸入强酸及强碱中，去除杂质，进行提纯处理；进行高温石墨化处理；处理后的石墨和金属触媒条件下，在高温高压下生成金刚石粉或颗粒；将生成的金刚石粉或颗粒为原料，应用温差法和晶种法，在高温高压下生长宝石级大颗粒金刚石单晶；将该宝石级金刚石单晶切割加工为生命钻石。本发明使用金刚石粉或金刚石粉及石墨粉的混合物作为碳源，可以避免腔体压力下降及变形问题，有利于高质量单晶的生长。

Crystalline gallium nitride and method for forming crystalline gallium nitride

A gallium nitride growth process forms crystalline gallium nitride. The process comprises the steps of providing a source gallium nitride; providing mineralizer; providing solvent; providing a capsule; disposing the source gallium nitride, mineralizer and solvent in the capsule; sealing the capsule; disposing the capsule in a pressure cell; and subjecting the pressure cell to high pressure and high temperature (HPHT) conditions for a length of time sufficient to dissolve the source gallium nitride and precipitate the source gallium nitride into at least one gallium nitride crystal. The invention also provides for gallium nitride crystals formed by the processes of the invention.

Patent JPH0477612B2

Method of manufacturing polycristalline diamono aggregates of preset shape

Methods of improving pcd sintering (polycrystalline diamond) using graphene

Изобретение может быть использовано для изготовления прессовок поликристаллического алмаза и режущего инструмента. Наноразмерный одно- или многослойный материал, содержащий графен, спекают примерно 5 мин в отсутствие катализатора - переходного металла при давлении и температуре по меньшей мере 45 кбар и 700°С, соответственно. По другому варианту указанный материал перед спеканием смешивают с алмазной затравкой в количестве не менее 0,01% от массы смеси. Графен имеет отношение размеров от 500 до 2000. Полученные прессовки поликристаллического алмаза и режущий элемент содержат поликристаллические суперабразивные частицы, например алмаз. Изобретение позволяет избежать вредного влияния катализатора на механические и абразивные свойства прессовок и режущего инструмента. 4 н. и 20 з.п. ф-лы, 3 табл., 7 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 636 508 C2 (51) МПК C01B 32/26 (2017.01) B82B 3/00 (2006.01) B82Y 30/00 (2011.01) C30B 29/04 (2006.01) C09K 3/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2014127531, 05.12.2012 (24) Дата начала отсчета срока действия патента: 05.12.2012 (72) Автор(ы): ЧЖАН Хой (US), МАЛИК Абдс-Сами (US) (73) Патентообладатель(и): ДАЙМОНД ИННОВЕЙШНЗ, ИНК. (US) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 2011/0252711 A1, 20.10.2011. Приоритет(ы): (30) Конвенционный приоритет: 05.12.2011 US 61/566,807 (45) Опубликовано: 23.11.2017 Бюл. № 33 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.07.2014 (86) Заявка PCT: US 2012/067913 (05.12.2012) (87) Публикация заявки PCT: 2 6 3 6 5 0 8 (43) Дата публикации заявки: 10.02.2016 Бюл. № 4 ЧЕРНОЗАТОНСКИЙ Л.А. и др., Алмазоподобный нанослой С 2 Н - диаман: моделирование структуры и свойств, Письма в ЖЭТФ, 2009, т. 90, вып. 2, с.с. 144148. US 2011/0252713 A1, 20.10.2011. GB 1215944 A, 16.12.1970. EP 0482372 A1, 29.04.1992. R U 23.11.2017 2 6 3 6 5 0 8 R U Адрес для переписки: 129090, ...

DIAMOND COLOR CHANGE AT HIGH TEMPERATURE / HIGH PRESSURE

Method and device for synthesizing diamond crystal

(57)【要約】 【課題】 ダイヤモンド結晶を成長させる際、従来の技 術では圧力・温度のバラツキの影響で、毎回安定した収 量および結晶品質が得られず、また荷重を一定速度で増 加させているために結晶成長初期の成長速度が大きくな り結晶中に溶媒金属の包有物が取り込まれ結晶の強度が 劣化するという問題があったので、本発明は、黒鉛から ダイヤモンドへの変換量（△Ｌｄ）を計測することで圧 力・温度変化を間接的に評価し、この測定データをもと に外部条件（荷重・加熱電力）にフィードバック制御し て良質なダイヤモンド結晶を再現性よく合成する方法お よび超高圧・高温発生制御装置を提供することにある。 【解決手段】 対抗したアンビル１、１′と中空シリン ダー２に囲まれる加圧空間６内に圧力媒体３、ヒーター ４、黒鉛−溶媒金属積層または混合物５を配置し、距離 センサー１０と荷重センサー１１の計測結果を制御回路 １２に入力し、予め定められた制御パターンに追従すべ く演算して、油圧プレス１３または加熱電源１４に出力 し、包有物の少ない良質のダイヤモンド結晶を歩留まり よく製造する手段である。

Improved ultrahigh pressure apparatus

Superhigh pressure building-up device

Polycrystalline diamond manufacturing method

本发明涉及超硬材料合成领域，具体为一种多晶金刚石的制造方法。本发明提供一种多晶金刚石的制造方法，将基础材料置于真空室内，在真空室内创造一个高温环境，之后注入碳氢化合物气体和含有第三族元素的化合物气体，采用气相沉积法得到石墨，再对石墨加热加压，使其转化为多晶金刚石。本发明可快速稳定地制造多晶金刚石，降低了制造多晶金刚石的成本，生产出高品级多而且在生产过程中可控性强。

Microcrystalline monolithic carbon material

METHODS FOR PRODUCING POLYCRYSTAL POLYCRYSTILE, INCLUDING PRODUCTION OF MATERIAL WITH SUPERABRASIVE CRYSTALS BEFORE PROCESSING, HIGH PRESSURE AND HIGH TEMPERAL RESISTANCE

1. Способ изготовления поликристаллического элемента, включающийпропитку кристаллов суперабразивного материала расплавленным сплавом металлов при температуре не выше 1200°С и отверждение расплавленного сплава металлов в междоузлиях между кристаллами суперабразивного материала для получения твердого сплава металлов с включенными в него кристаллами суперабразивного материала; иобработку твердого сплава металлов с включенными в него кристаллами суперабразивного материала в режиме высокого давления и высокой температуры для образования межкристаллитных связей между кристаллами суперабразивного материала.2. Способ по п.1, в котором обработка твердого сплава металлов с включенными в него кристаллами суперабразивного материала в режиме высокого давления и высокой температуры включает обработку твердого сплава металлов с включенными в него кристаллами суперабразивного материала под давлением по меньшей мере около 5,0 ГПа и при температуре по меньшей мере около 1350°С.3. Способ по п.1 или 2, в котором пропитка кристаллов суперабразивного материала расплавленным сплавом металлов при температуре не выше примерно 1200°С включает пропитку кристаллов суперабразивного материала по меньшей мере одним сплавом из группы, включающей сплав никеля, имеющий температуру плавления не выше примерно 1200°С, сплав кобальта, имеющий температуру плавления не выше примерно 1200°С, и сплав железа, имеющий температуру плавления не выше примерно 1200°С.4. Способ по п.1 или 2, в котором пропитка кристаллов суперабразивного материала расплавленным сплавом металлов при температуре не выше примерно 1200°С включает, кроме того, пропитку крист� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2013 151 620 A (51) МПК E21B 10/46 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013151620/02, 18.04.2012 (71) Заявитель(и): БЕЙКЕР ХЬЮЗ ИНКОРПОРЕЙТЕД (US) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ДИДЖОВАННИ Антони А. (US) 21.04.2011 US 13/091,660 ...