SELECTIVELY LEACHED, POLYCRYSTALLINE STRUCTURES FOR CUTTING ELEMENTS OF DRILL BITS

The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leachi...

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Main Authors CLEGG, JOHN MARTIN, MURDOCK, ANDREW DAVID, DUBOSE, WILLIAM HENRY, BOWDEN, NEAL ALAN, MUMMA, MATTHEW DOUGLAS
Format Patent
LanguageEnglish
French
German
Published 15.07.2015
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Abstract The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.
AbstractList The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.
Author MUMMA, MATTHEW DOUGLAS
DUBOSE, WILLIAM HENRY
MURDOCK, ANDREW DAVID
BOWDEN, NEAL ALAN
CLEGG, JOHN MARTIN
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DocumentTitleAlternate SELEKTIV GELAUGTE, POLYKRISTALLINE STRUKTUREN FÜR SCHNEIDELEMENTE VON BOHRKRONEN
STRUCTURES POLYCRISTALLINES LIXIVIÉES SÉLECTIVEMENT POUR DES ÉLÉMENTS DE COUPE OU DES TRÉPANS
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Snippet The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an...
SourceID epo
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SubjectTerms AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CRYSTAL GROWTH
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GRINDING
LIME, MAGNESIA
METALLURGY
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
POLISHING
PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
REFINING BY ZONE-MELTING OF MATERIAL
REFRACTORIES
SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
SINGLE-CRYSTAL-GROWTH
SLAG
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
TREATMENT OF NATURAL STONE
UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
Title SELECTIVELY LEACHED, POLYCRYSTALLINE STRUCTURES FOR CUTTING ELEMENTS OF DRILL BITS
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