Patent ID: 8361634

Claim:
A composite article, comprising: a SiC ceramic part, a bronze part, and a connecting layer that connects the SiC ceramic part to the bronze part, wherein the connecting layer is formed by placing a Al foil and a Ni foil between the SiC ceramic part and the bronze part with the Al foil abutting the SiC ceramic part and the Ni foil abutting the bronze part, then heating and pressing the SiC ceramic part, the bronze part, the Al foil and the Ni foil; wherein the connecting layer includes a first transition layer adjacent the SiC part, a Al layer, a second transition layer, a Ni layer, and a third transition layer adjacent the bronze part, and in that order; the first transition layer located between the SiC ceramic part and the Al layer mainly includes compounds comprising Al element and C element; and the thermal expansion rate of the connecting layer gradually changes from that of the first transition layer to that of the third transition layer.