IMPREGNATED CUTTING STRUCTURES, EARTH-BORING TOOLS INCLUDING THE IMPREGNATED CUTTING STRUCTURES, AND RELATED METHODS

A method of forming an impregnated cutting structure for an earth-boring tool comprises providing a powder mixture comprising diamond particles and a metal binder in a press and subjecting the powder mixture to a pressure greater than about 4.0 GPa and a temperature greater than about 1,200° C. to d...

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Bibliographische Detailangaben
1. Verfasser:	Webb, Steven W
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	A method of forming an impregnated cutting structure for an earth-boring tool comprises providing a powder mixture comprising diamond particles and a metal binder in a press and subjecting the powder mixture to a pressure greater than about 4.0 GPa and a temperature greater than about 1,200° C. to densify the powder mixture and form an impregnated cutting structure comprising the diamond particles dispersed in a continuous phase comprising the metal binder, wherein the impregnated cutting structure is substantially free of diamond-to-diamond bonds and of carbides. Related methods of forming an earth-boring tool and a related earth-boring tool including the impregnated cutting structure are also disclosed.