Joint strength of Si_3N_4 brazed with Ti-Zr-Ni-Cu amorphous brazing alloy

Si_3N_4 ceramic was brazed with Ti40Zr25Ni15Cu20 amorphous filler metal, the effect of brazing processing parameters on interfacial microstructure and joint strength was discussed. The results show that the joint strength first increases then descends with the increase of brazing time and brazing temperature, and the influence on joint strength is carried out by reaction layer thickness. Under the same experiments conditions, the joint strength brazed with amorphous filler metal is enhanced by 84%compared with the crystalline filler.