Diamond bonded construction with thermally stable region

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United States of America Patent

PATENT NO 8365844
APP PUB NO 20120097458A1
SERIAL NO

13338146

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Abstract

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Diamond bonded constructions comprise a polycrystalline diamond body having a matrix phase of bonded-together diamond grains and a plurality of interstitial regions between the diamond grains including a catalyst material used to form the diamond body disposed within the interstitial regions. A sintered thermally stable diamond element is disposed within and bonded to the diamond body, and is configured and positioned to form part of a working surface. The thermally stable diamond element is bonded to the polycrystalline diamond body, and a substrate is bonded to the polycrystalline diamond body. The thermally stable diamond element comprises a plurality of bonded-together diamond grains and interstitial regions, wherein the interstitial regions are substantially free of a catalyst material used to make or sinter the thermally stable diamond element. A barrier material may be disposed over or infiltrated into one or more surfaces of the thermally stable diamond element.

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Patent Owner(s)

Patent OwnerAddress
SMITH INTERNATIONAL INC16740 HARDY STREET HOUSTON TX 77032

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Belnap, J Daniel Pleasant Grove, US 74 3942
Randall, Benjamin Spanish Fork, US 5 166
Voronin, Georgiy Orem, US 34 1530
Yu, Feng Pleasant Grove, US 251 2866

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