Fabrication of Quasicrystalline Scaffolds From the Al-Cu-Fe System by Dynamic Freeze-Casting

In this study, scaffolds whose main phase is an icosahedral quasicrystal (i-QC) were prepared for the first time by dynamic freeze-casting. Two different metal powders used here, namely pure aluminum and quasicrystalline particles from Al-Cu-Fe system. These powers initially mixed with deionized water, citric acid, poly(vinyl alcohol). The obtained slurry was frozen while rotating freeze-dried under vacuum. green bodies subsequently heat-treated in a reducing atmosphere. total porosity mean pore size evaluated these 62.4 ± 3.0% 67.3 2.8 μm, respectively. This that freeze-drying has been preparation of QC scaffolds, which reinforces novelty study. addition, proposed route simple, inexpensive, environmentally friendly, also worth highlighting.