High damping capacity in porous NiTi alloy with bimodal pore architecture

► We prepared porous NiTi alloy with pressureless sintering Ni/Ti powders with NaCl space holder. ► The pore architecture of this porous Ni50.5Ti49.5 alloy with large and small pores was investigated. ► This unique bimodal pore architecture contributed to the high damping capacity of the foam. ► The low modulus and pore size met the demand of cancellous bones.