Abstract:Novel corrosive wear resistant alloys with the microstructure consisting of ternary metal silicide Ti2Ni3Si primary dendrites and Ti2Ni3Si/NiTi eutectic matrix were designed and fabricated by the laser melting process. Both the corrosion behavior of Ti2Ni3Si/NiTi intermetallic alloys and the effect of Ti content in alloys on the corrosion resistance of alloys were investigated by polarization curve, Tafel plot, EIS in 1 mol/L H2SO4 solution. Results show that the alloys have excellent corrosion resistance in 1 mol/L H2SO4 solution owing to the formation of stable passivation film and the high chemical stability of Ti2Ni3Si and NiTi intermetallic. With increasing of Ti content, the corrosion resistances of the alloys are improved slightly.