Fabrication of porous Al with controlled pore size by spark plasma sintering

摘要

Porous Al with controlled pore size was prepared by the spacer method including spark plasma sintering and the dissolution of space-holding NaCI particles. The NaCI of the controlled pore size (particle diameter control range of 5 um~20 μm) were prepared by precipitation method. The effects of sintering condition such as the sintering electric current intensity, voltage and the size, morphology and content of NaCI powder on the porosity and size of porous Al are investigated. The porous Al with higher porosity of 69.41 % and smaller pore size of 5 um was obtained.