CEMENTED TUNGSTEN CARBIDE BODIES HAVING A COBALT-BORON ALLOY MATRIX

A cobalt-boron alloy is used as the matrix in a polycrystalline diamond compact. The matrix is hot isostatic pressed with tungsten carbide to form a substrate. The substrate is then high-pressure, high temperature sintered with a diamond powder, preformed and acid-leeched diamond plate, or another u...

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Bibliographic Details
Main Authors Jiang Yuming, Alkhalaileh Samer, Chen Zheng
Format Patent
LanguageEnglish
Published 04.08.2016
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GRINDING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
POLISHING
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
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Summary:A cobalt-boron alloy is used as the matrix in a polycrystalline diamond compact. The matrix is hot isostatic pressed with tungsten carbide to form a substrate. The substrate is then high-pressure, high temperature sintered with a diamond powder, preformed and acid-leeched diamond plate, or another ultra-hard material in a press mold to sweep the matrix, thereby creating an ultra-hard polycrystalline compact at a temperature 400° C. lower and with less graphitization than conventional techniques using cobalt binder. The compact is stronger and has a longer useful life than conventional compacts.
Bibliography:Application Number: US201514611457