The effects of brazing temperature on microstructure and bonding strength of vacuum brazed joints of Ti(C,N)-based cermet and 17-4 PH stainless steel, using filler metal BNi-2, were investigated. At a lower brazing temperature of 1050 C. the distribution of melting point depressants (MPD) concentrated on the diffusion affected zone (DAZ) and the brazing seam near the Ti(C,N)-based cermet, the generation of brittle phases in the brazing seam was unavoidable. The uniform distribution of the MPD and full solid solution of gamma-nickel occurred in the brazing seam at a higher brazing temperature of 1150 degrees C. A maximum shear strength of 690 MPa was achieved at a brazing temperature of 1150 degrees C. (C) 2011 Elsevier B.V. All rights reserved.
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