Strength and fracture character of SiC_p/2009Al joint by composites reaction diffusion bonging with Al-Ag-Cu-Ti

Reaction diffusion bonding of SiC_p/2009Al composites was carried out under vacuum conditions with Al-Ag-Cu-Ti as interlayer.The results show that the joint strength of SiC_p/2009Al composites is affected by the content of Ti, jointing temperature and holding time.When the optimum process is at 550℃ holding for 60 min with 3wt% Ti, the joint strength can reach to 120MPa.The intermetallic compounds become as the crack source which propagate in the joint and result in the fracture of the joint.