Earth-boring tools comprising eutectic or near-eutectic compositions
AssigneeBaker Hughes Incorporated
InventorsJohn H. Stevens, Jimmy W. Eason
Life of this patent
Estimating the term…
Abstract
Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase. Other articles include a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase and a coating material in contact with the solidified eutectic or near-eutectic composition.
Claims17
An article comprising at least a portion of an earth-boring tool, the article comprising:
- at least one insert;
- and
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant selected from the group consisting of a transition metal aluminate, a transition metal metasilicate, and a transition metal oxide.
An article comprising at least a portion of an earth-boring tool, the article comprising:
- at least one insert;
- and
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant, wherein the metal phase comprises at least one of cobalt, iron, nickel, and alloys thereof.
An article comprising at least a portion of an earth-boring tool, the article comprising:
- at least one insert;
- and
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant, wherein the hard material phase comprises a ceramic compound selected from the group consisting of carbides, borides, nitrides, and mixtures thereof.
An article comprising at least a portion of an earth-boring tool, the article comprising:
- at least one insert;
- and
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant, the composition having a composite microstructure that includes regions of the metal phase and the hard material phase.
An article comprising at least a portion of an earth-boring tool, the article comprising:
- at least one insert at least partially defining at least one of a cutting surface and a bearing surface of the at least a portion of an earth-boring tool;
- and
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant.
An article comprising at least a portion of an earth-boring tool, the article comprising:
- a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant selected from the group consisting of a transition metal aluminate, a transition metal metasilicate, and a transition metal oxide;
- and
- a coating material in contact with the solidified eutectic or near-eutectic composition.
An earth-boring tool, comprising:
- a bit body carrying at least one cutter assembly, the at least one cutter assembly comprising a solidified eutectic or near-eutectic composition including a metal phase, a hard material phase, and an inoculant selected from the group consisting of a transition metal aluminate, a transition metal metasilicate, and a transition metal oxide;
- and
- at least one insert secured to the at least one cutter assembly.
Dependencies are inferred from the claim text.