HARDFACING MATERIALS INCLUDING PCD PARTICLES, WELDING RODS AND EARTH-BORING TOOLS INCLUDING SUCH MATERIALS, AND METHODS OF FORMING AND USING SAME

Title:

HARDFACING MATERIALS INCLUDING PCD PARTICLES, WELDING RODS AND EARTH-BORING TOOLS INCLUDING SUCH MATERIALS, AND METHODS OF FORMING AND USING SAME

Document Type and Number:

WIPO Patent Application WO/2011/003051

Kind Code:

A3

Abstract:

Hardfacing materials include particles of polycrystalline diamond (PCD) material embedded within a matrix material. The PCD particles comprise a plurality of inter-bonded diamond grains. Material compositions and structures used to apply a hardfacing material to an earth-boring tool (e.g., welding rods) include PCD particles. Earth-boring tools include a hardfacing material comprising PCD particles embedded within a matrix material on at least a portion of a surface of a body of the tools. Methods of forming a hardfacing material include subjecting diamond grains to elevated temperatures and pressures to form diamond-to-diamond bonds between the diamond grains and form a PCD material. The PCD material is broken down to form PCD particles that include a plurality of inter-bonded diamond grains. Methods of hardfacing tools include bonding PCD particles to surfaces of the tools using a metal matrix material.

Inventors:

LYONS NICHOLAS J (US)
SCOTT DAN E (US)

Application Number:

PCT/US2010/040860

Publication Date:

March 31, 2011

Filing Date:

July 02, 2010

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
LYONS NICHOLAS J (US)
SCOTT DAN E (US)

International Classes:

E21B10/46; E21B10/50; E21B10/54

Foreign References:

US5755299A	1998-05-26
US20080283305A1	2008-11-20
US20030024351A1	2003-02-06
US20040025443A1	2004-02-12

Other References: