Patent ID: 8349466

Claim:
A composite material comprising: from about 60 to about 80 weight percent hard ceramic particles; and from about 20 to about 40 weight percent of a thermally aged Cu-based infiltration alloy comprising Ni, Sn, and Nb contacting the hard ceramic particles, wherein the thermally aged Cu-based infiltration alloy is a spinodal alloy and is substantially free of Mn, the Cu comprises from about 80 to about 85 weight percent of the thermally aged Cu-based infiltration alloy, the Ni comprises from about 8 to about 12 weight percent of the thermally aged Cu-based infiltration alloy, the Sn comprises from about 5 to about 12 weight percent of the thermally aged Cu-based infiltration alloy, and the Nb comprises from about 0.1 to about 1 weight percent of the thermally aged Cu-based infiltration alloy.