Interface structure and strength of brazed joints between TiC ceramic and iron

The brazing of TiC ceramic to iron was carried out at 1123-1273 K for 5-20 min using Ag-Cu-Zn filler metal. Interface structure and shear strength of joints were investigated, the former via electron probe microanalysis, scanning electron microscopy, and X-ray diffraction, and the latter via the shearing method. The results show the formation of three phases in the TiC ceramic-iron joint, namely, copper base solid solution, FeNi, and silver base solid solution. The highest joint shear strength of 256-5 MPa is obtained for a brazing temperature of 1173 K and brazing time of 5 min.