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 °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 °C and which has the following composition, by weight:
<UnorderedLists id="ula01" listStyle="none"><ListItem>Au 18-39.5%</ListItem><ListItem>Ni 3.5-14.5%</ListItem><ListItem>Pd 2.5-10.5%</ListItem><ListItem>Mn 7.5-9.0%</ListItem><ListItem>Cu Balance.</ListItem></UnorderedLists>