Compressive Behavior of Porous Cu Fabricated by Sintering-dissolution Technology

Porous Cu specimens were fabricated through sintering-dissolution technology and their pore morphologies and compressive mechanical properties were characterized in the present study.It is shown that open-cell porous Cu can be fabricated by using commercially pure Cu powder and carbamide particles through consolidating,sintering and dissolving processes,the pore size and porosity of which can be varied in the ranges of 60%-80% and 100-400 μm,respectively.The compressive stress of the porous specimens are directly related to their densities but less dependent on their pore sizes.The compressive yield stress and flow stress increase with increasing the density or decreasing the porosity,while they basically keep unchanged with changing the pore size.