Thermally stable polycrystalline ultra-hard constructions
AssigneeSmith International, Inc.
InventorsGeorgiy Voronin, J. Daniel Belnap
Life of this patent
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Abstract
Thermally stable polycrystalline constructions comprise a body having a polycrystalline ultra-hard phase and a plurality of empty voids. A population of the voids can be filled with a reaction product. The body is substantially free of a catalyst material. The construction comprises a first support member attached to the body by a first braze material. A second support member is attached to the body and the first support member by a second braze material. The construction may include a third support member attached to the body that is integral or separate from one of the other support members. The braze materials used to attached the support members can be the same or different, as can be the materials used to form the different support members.
Claims34
A thermally stable polycrystalline construction comprising:
- a body comprising a polycrystalline ultra-hard material, wherein the body is substantially free of a catalyst used to form the polycrystalline ultra-hard material;
- a first support member that is attached to a first region of the body by a first braze material;
- and
- a second support member that is attached to a second region of the body by and to the first support member by a second braze material, wherein the second braze material comprises a first region of braze material adjacent the body and a second region of braze material adjacent the first support member;
- and wherein the first braze material is different from the second region of second braze material.
A thermally stable polycrystalline construction comprising:
- a body comprising a polycrystalline diamond first phase and a plurality of second phases disposed within matrix first phase, wherein second phases are selected from the group consisting of empty voids, a reaction product with the polycrystalline diamond, and a combination thereof, wherein the body is substantially free of a catalyst material, the body having a front side surface, a backside surface, and an inside wall surface;
- a backside support member attached to the body backside surface by a first braze material;
- a sidewall support member attached to both the body and the backside support member by at least a second braze material;
- and
- a front support member attached to a region of the body front side surface, and extending from the sidewall support member.
Dependencies are inferred from the claim text.