Formation of porous alumina with oriented pores |
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| Affiliation: | 1. Poznan University of Technology, Institute of Materials Science and Engineering, Jana Pawla II no. 24, 61-138 Poznan, Poland;2. Lublin University of Technology, Department of Materials Engineering, 20-618 Lublin, Poland;3. Metal Forming Institute, Jana Pawla II no. 14, 61-139 Poznan, Poland |
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| Abstract: | Adopting the theories describing the bubble forming in the metal–hydrogen solidification process, porous alumina with oriented pores was prepared by combining a foaming method with sol-gel technology. The bubble forming process in the sol-gel is different from that in the metal–hydrogen system. Samples were calcined at temperature from 800 to 1200C. The volume-shrinkage and compressive-strength increased with increasing calcination temperature. The porous alumina exhibited a bimodal pore structure when prepared below 1200°C. |
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