METHODS OF FORMING POLYCRYSTALLINE COMPACTS

Title:

METHODS OF FORMING POLYCRYSTALLINE COMPACTS

Document Type and Number:

WIPO Patent Application WO/2011/139760

Kind Code:

A3

Abstract:

Methods of forming a polycrystalline compact for use in an earth-boring tool include sintering a plurality of hard particles with catalyst material to form a polycrystalline material that includes a plurality of inter-bonded particles of hard material integrally formed with the catalyst material and introducing at least a portion of the polycrystalline material to a reactive material to remove at least a portion of the catalyst material contained within the polycrystalline material. The reactive material may include at least one of a molten glass, an ionic compound, a leaching liquor, and a chemical plasma. The reactive material may be introduced to the polycrystalline material at a temperature of greater than or equal to a melting point thereof.

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Inventors:

DIGIOVANNI ANTHONY A (US)

Application Number:

PCT/US2011/034125

Publication Date:

December 22, 2011

Filing Date:

April 27, 2011

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
DIGIOVANNI ANTHONY A (US)

International Classes:

E21B10/50; B24D3/00; E21B10/54; E21B10/567

Foreign References:

US20100084197A1	2010-04-08
US20060060392A1	2006-03-23
US20090090563A1	2009-04-09
US20060266559A1	2006-11-30

Other References: