Analysis on the interface microsctruture and property of SiC_f/SiCand MX246A brazing joint

The brazing of SiC_f/SiC and MX246A using high temperature active solider with Ti and Hf to make high quality connection was carried out. The microstructure, phases and mechanical property was analyzed. The results showed that there were compounds as Ni₂Si, NiTi, TiC, NiAl, Ni₃₁Si₁₂ formed in the interface and the phases consists of (SiC_f/SiC)/MX246A joints was (SiC_f/SiC)/TiC + NiTi + Ni2Si + Ni31Si12 + (Ni, Cr) + (Cr, W) + (W, Mo)/MX246A and the shear strength of the joint was up to 90 MPa.