Pore Morphology and Compressive Properties of Open-Celled Porous Cu Fabricated by Using NaCl as Pore Former

Open-celled porous Cu had been fabricated by using NaCl particles as pore former through sintering-dissolution process.The pores and compressive properties were studied.It is shown that the pores of porous Cu had 3d transfixion open-celled network structure.The shape and size of the pores were similar to those of NaCl particulates.The flexural fracture surface exhibited typical ductile rupture characteristics.The compressive stress-strain curves could be distinctly divided into three stages including elasticity,plateau and densification.The layer-by-layer collapse was the predominant deformation mechanism during compression.And the material had better compressive energy abstrption property.