Research Article
Fabrication of Highly Porous Alumina-Based Ceramics with Connected Spaces by Employing PMMA Microspheres as a Template
Table 2
Microstructural and mechanical properties of porous alumina-based ceramics.
| | Samples | SEM photograph | Hg porosimeter | XRD | Compressive strength (MPa) | | Average diameter (m) | Pore volume (cm3 g-1) | Pore diameter (m) | Experimental open porosity (%) | Crystallite size (nm) | | PMMA-originated pore | Connected spaces | | | | |
| | P20NONE | 20.8 | 3.5 | 0.35 | 2.1 | 58 | 20.9 | 95.8 | | P60NONE | 58.2 | 7.2 | 0.34 | 7.0 | 57 | 22.1 | 49.5 | | P90NONE | 89.3 | 13.6 | 0.34 | 11.6 | 57 | 22.8 | 28.7 |
| | P20MgO(1) | 20.2 | 2.5 | 0.28 | 1.8 | 52 | 30.5 | 125.4 | | P20MgO(3) | 18.8 | 1.8 | 0.27 | 1.6 | 51 | 34.5 | 138.5 | | P60MgO(1) | 56.7 | 6.2 | 0.27 | 6.5 | 51 | 32.4 | 57.4 | | P90MgO(1) | 87.7 | 12.3 | 0.26 | 10.8 | 50 | 33.2 | 32.8 |
| | P20SiC(1) | 20.1 | 1.9 | 0.41 | 1.6 | 62 | 42.8 | 128.5 | | P20SiC(3) | 19.4 | 1.6 | 0.41 | 1.3 | 62 | 60.4 | 147.6 |
| | P20SiO2(4.5) | 19.5 | 1.8 | 0.36 | 1.6 | 58 | 57.4 | 125.2 |
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