HARDFACING MATERIALS INCLUDING PCD PARTICLES, WELDING RODS AND EARTH-BORING TOOLS INCLUDING SUCH MATERIALS, AND METHODS OF FORMING AND USING SAME
First Claim
1. A hardfacing material, comprising:
- a metal matrix material; and
particles of polycrystalline diamond material embedded within the metal matrix material, the particles of polycrystalline diamond material comprising a plurality of inter-bonded diamond grains.
2 Assignments
0 Petitions
Accused Products
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.
48 Citations
22 Claims
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1. A hardfacing material, comprising:
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a metal matrix material; and particles of polycrystalline diamond material embedded within the metal matrix material, the particles of polycrystalline diamond material comprising a plurality of inter-bonded diamond grains. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A welding rod for use in applying hardfacing to a surface of a tool, comprising:
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an elongated, generally cylindrical body comprising a metal matrix material; and particles of polycrystalline diamond material carried by the elongated, generally cylindrical body, the particles of polycrystalline diamond material comprising a plurality of inter-bonded diamond grains. - View Dependent Claims (10)
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11. An earth-boring tool, comprising:
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a body; at least one cutting element on the body; and hardfacing material on at least a portion of a surface of the body, the hardfacing material comprising; a metal matrix material; and particles of polycrystalline diamond material embedded within the metal matrix material, the particles of polycrystalline diamond material comprising a plurality of inter-bonded diamond grains. - View Dependent Claims (12, 13, 14, 15)
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16. A method of forming a hardfacing material, comprising:
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subjecting diamond grains to a temperature greater than about 1,500°
C. and a pressure greater than about 5.0 GPa to form diamond-to-diamond bonds between the diamond grains and form a polycrystalline diamond material; andbreaking down the polycrystalline diamond material to form particles of polycrystalline diamond material, the particles of polycrystalline diamond material comprising a plurality of inter-bonded diamond grains. - View Dependent Claims (17, 18, 19, 20)
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21. A method of hardfacing an earth-boring tool, comprising:
bonding particles of polycrystalline diamond material including a plurality of inter-bonded diamond grains to a surface of an earth-boring tool using a metal matrix material. - View Dependent Claims (22)
Specification