Abrasive compacts
OwnerHenry B. Dyerinventor
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Abstract
In a method of removing second phase from an abrasive compact, the invention provides the improvement of forming a hole in the compact prior to or during the removal step. The compact is typically a diamond compact having a cobalt second phase. The preferred removal method is by leaching using as a leach medium hydrochloric acid in the presence of a platinum group metal catalyst.
Claims10
A method of removing a metallic second phase from an abrasive compact containing such a phase wich includes the step of increasing the surface area of the compact by forming a hole in the compact extending inwardly from a surface of the compact prior to or during removal of the second phase.
Dependencies are inferred from the claim text.