METHOD OF MAKING POLYCRYSTALLINE DIAMOND BODIES INCORPORATING FRACTIONATED DISTRIBUTION OF DIAMOND PARTICLES OF DIFFERENT MORPHOLOGIES

Diamond bodies and methods of manufacture are disclosed. Diamond bodies are ormed from at least a bimodal, alternatively a tri-modal or higher modal, feedstock having at east one fraction of modified diamond particles with a fine particle size (0.5-3.0 µm) and at east one fraction of diamond particl...

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Bibliographische Detailangaben
Hauptverfasser:	Scott, Danny, Johnson, Alexanne, Bird, Marc, Gledhill, Andrew
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS ARTIFICIAL STONE CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FERROUS OR NON-FERROUS ALLOYS FIXED CONSTRUCTIONS GRINDING INORGANIC CHEMISTRY LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MINING NON-METALLIC ELEMENTS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS POLISHING POWDER METALLURGY REFRACTORIES SLAG TOOLS FOR GRINDING, BUFFING, OR SHARPENING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	Diamond bodies and methods of manufacture are disclosed. Diamond bodies are ormed from at least a bimodal, alternatively a tri-modal or higher modal, feedstock having at east one fraction of modified diamond particles with a fine particle size (0.5-3.0 µm) and at east one fraction of diamond particles with coarse particle size (15.0 to 30 µm). During high pressure - high temperature processing, fine particle sized, modified diamond particles in the irst fraction preferentially fracture to smaller sizes while preserving the morphology of coarse particle sized diamond particles in the second fraction. Diamond bodies incorporating he two fractions have a microstructure including second fraction diamond particles dispersed n a continuous matrix of first fraction modified diamond particles and exhibit improved wear characteristics, particularly for wear associated with drilling of geological formations.