Nanocrystalline ZrO2 Porous Ceramics Fabricated by SPS
The porous ZrO2 ceramics was prepared by spark plasma sintering (SPS) at 520 °C. A dense closed micro-cellular ceramic structure was fabricated with micron Al90Mn9Ce1 alloy powders clading by 10 wt% ZrO2 nano-powder. SEM image showed that the thickness of ceramic cell wall was 1.0 - 2.0 μm. After deep corrosion with 10% HCl, an integrity nanocrystalline ZrO2 porous sample was obtained. Based on the experimental results, the transient spark plasma sintering mechanism of micron-nano mixing powder was also studied.
Shiquan Liu and Min Zuo
D. Zhang et al., "Nanocrystalline ZrO2 Porous Ceramics Fabricated by SPS", Advanced Materials Research, Vols. 306-307, pp. 1398-1401, 2011