LIQUID-METAL-EMBRITTLEMENT RESISTANT SUPERABRASIVE COMPACTS

摘要

A superabrasive compact (e.g., a polycrystalline diamond compact) including a substrate and at least one feature for reducing the susceptibility of the substrate to liquid metal embrittlement during brazing operations is disclosed. The superabrasive compact may include a region between the substrate and a superabrasive table in which residual tensile stresses are located. The at least one feature may reduce the susceptibility of the substrate to liquid metal embrittlement by altering the stress state and/or substantially preventing the substrate from being wetted at the residual stress region.

主权项

1. A superabrasive compact, comprising;
a superabrasive table; a substrate including an interfacial surface bonded to the superabrasive table, a base surface, and at least one peripheral surface extending between the base surface and the interfacial surface; and at least one liquid-metal-embrittlement-susceptibility-reducing material positioned at least proximate to the interfacial surface of the substrate, the at least one liquid-metal-embrittlement-susceptibility-reducing material positioned and configured to be exposed to a braze alloy when the substrate is brazed to a body, wherein the at least one liquid-metal-embrittlement-susceptibility-reducing material is non-wettable by the braze alloy.