Patent ID: 9376573
Filing Date: 2016-06-28
CPC Classification: B22F,C09D,C22C,C23C,Y10T

Claim Text:
1. A heterogeneous composite body adhered to a substrate with an adhesive strength of greater than about 10,000 pounds per square inch gauge, said heterogeneous composite body being spall resistant and comprising a discontinuous cermet phase formed by cermet regions in a metal rich matrix phase, said metal rich matrix phase having an average span between said cermet regions sufficient to permit said metal rich matrix phase to work harden, said discontinuous cermet phase including ceramic particles and a cermet binder, said ceramic particles having a Moh's hardness of at least approximately 7.5, a modulus of less than approximately 46,000,000 pounds per square inch, and an average particle size of from about 0.1 to 10 microns, said heterogeneous composite body having a Vicker's hardness number of greater than approximately 500, a strain to failure of more than 1 percent, exhibits residual stresses of generally between approximately 5,000 pounds per square inch compressive and approximately 3,000 pounds per square inch tensile, and a modulus of less than approximately 35,000,000 pounds per square inch; wherein said ceramic particles comprise at least one of Si 3 N 4 , zircon, mullite, VN, V 2 N, Nb 2 N, SiCN, or SiON.