Analysis of porosity in NiTi SMA's changed by secondary pulse electric current treatment by means of ultra small angle scattering and micro-computed tomography

Abstract Porous NiTi samples were produced by two different techniques, Mechanical Alloying & Hot Pressing (MA&HP) and Reaction Synthesis (RS), followed by secondary Pulse Electric Current (PEC) treatment. The samples were analyzed by Ultra Small Angle Neutron Scattering and Computed Microtomography before and after the secondary treatment in order to investigate porosity of the samples. For the samples produced by MA&HP, PEC treatment does not cause any changes in pore size distribution for smaller pores (i.e.

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