The objective of this work is to prepare porous Ni-Sn alloys by low temperature activation reaction sintering method. The phase composition, volume expansion ratio, pore structures and pore morphology of the sintered samples were studied by x-ray diffraction (XRD), vernier caliper measurement, aperture tester, and scanning electron microscopy (SEM). The results indicate that the phase composition is related to Sn content, pore size and porosity. The volume expansion rate of porous Ni-Sn alloys decreases first and then increases with the Sn amou...
