BRAZED COMPOSITE COMPACT IMPLEMENT

摘要

Disclosed is an improved implement comprising a cemented carbide supported composite abrasive compact which is brazed to a cemented carbide substrate with a brazing filler metal having a liquidus substantially above 700 DEG C. The composite compact preferably is a composite polycrystalline diamond compact. The brazing filler metal is a brazing alloy having a liquidus not substantially above 1,004 DEG C. and which has the following composition, by weight: Au: 18-39.5% Ni: 3.5-14.5% Pd: 2.5-10.5% Mn: 7.5-9.0% Cu: Balance.