Patent ID: 8431857

Claim:
A process for joining a brass part and a silicone carbide ceramics part, comprising steps of: providing a brass part, a silicone carbide ceramics part, a titanium foil, and a nickel foil; bringing surfaces of the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part into contact in turn; applying a joining pressure between about 20 MPa and 50 MPa to the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part; and simultaneously applying a pulse electric current to the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part while the joining pressure is applied, heating the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part at a rate below 50° C./min when a temperature of the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part is below about 300° C.; when the temperature of the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part is above about 300° C., heating the silicone carbide ceramics part, the titanium foil, the nickel foil and the brass part at a rate of about 80˜200° C./min until to a joining temperature of about 750° C. to about 950° C., and maintaining the joining temperature for about 10˜35 minutes; wherein the brass part comprises one selected from the group consisting of alpha brass, alpha-beta brass, beta brass, lead brass containing 1˜6 wt % lead, tin brass containing 1˜6 wt % tin, titanium brass containing 1˜6 wt % titanium, manganese brass containing 1˜6 wt % manganese, iron brass containing 1˜6 wt % iron, silicone brass containing 1˜6 wt % silicone, and nickel brass containing 1˜6 wt % nickel.