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

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

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

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Hauptverfasser: JOHNSON Alexanne, BIRD Marc William, SCOTT Danny Eugene, GLEDHILL Andrew Dean
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
GRINDING
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
POLISHING
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
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creator JOHNSON Alexanne
BIRD Marc William
SCOTT Danny Eugene
GLEDHILL Andrew Dean
description Diamond bodies and methods of manufacture are disclosed. Diamond bodies are formed from at least a bimodal, alternatively a tri-modal or higher modal, feedstock having at least one fraction of modified diamond particles with a fine particle size (0.5-3.0 μm) and at least 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 first fraction preferentially fracture to smaller sizes while preserving the morphology of coarse particle sized diamond particles in the second fraction. Diamond bodies incorporating the two fractions have a microstructure including second fraction diamond particles dispersed in a continuous matrix of first fraction modified diamond particles and exhibit improved wear characteristics, particularly for wear associated with drilling of geological formations.
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subjects CHEMISTRY
COMPOUNDS THEREOF
GRINDING
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
POLISHING
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
title POLYCRYSTALLINE DIAMOND BODIES INCORPORATING FRACTIONATED DISTRIBUTION OF DIAMOND PARTICLES OF DIFFERENT MORPHOLOGIES
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