Vacuum Brazing Porous W and Mo Using Ti-Ni-Nb Braze Alloys
A novel approach of brazing porous W and Mo using three clad Ti-Ni-Nb foils has been performed in the experiment. Clad Ti-Ni-Nb filler foils are featured with low brazing temperature of below 1350°C. Both W and Mo are completely soluble with β-Ti and Nb, and the Ni addition into the braze alloy is served as a melting point depressant (MPD). Decreased brazing temperature and/or time are necessary in order to minimize infiltration of the molten braze into the porous W substrate. According to the experimental results, Ti-Ni-Nb ternary alloys are promising filler metals in low-temperature brazing porous W and Mo.
Prof. Alan Kin Tak Lau, Prof. Tirumalai S. Srivatsan, Debes Bhattacharyya, Ming Qiu Zhang and Mabel M.P. Ho
C.C. Lin et al., "Vacuum Brazing Porous W and Mo Using Ti-Ni-Nb Braze Alloys", Advanced Materials Research, Vol. 410, pp. 187-190, 2012