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PREPARATION AND PROPERTIES OF POROUS ALUMINA CERAMIC PRODUCED BY AN EXTRUSION PROCESS |
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| รหัสดีโอไอ | |
| Creator | Thanakorn Wasanapiarnpong, Yolnapa Ngoenngam, Charusporn Mongkolkachit, and Suda Wanakitti |
| Title | PREPARATION AND PROPERTIES OF POROUS ALUMINA CERAMIC PRODUCED BY AN EXTRUSION PROCESS |
| Publisher | SUT |
| Publication Year | 2557 |
| Journal Title | Suranaree Journal of Science and Technology |
| Journal Vol. | 21 |
| Journal No. | 1 |
| Page no. | 41-46 |
| Keyword | Alumina, titania, porous ceramic, extrusion |
| ISSN | 0858-849X |
| Abstract | Porous alumina ceramic was fabricated by an extrusion method with the addition of titania as a sintering additive up to 20 wt%. Alumina powders were mixed and kneaded with titania and organic additives including binder (carboxy methyl cellulose, 7 wt% based on dry weight of alumina and titania; all wt% mentioned in this study based on the amount of inorganic powders excluding water), co-binder (polyvinyl alcohol, 1 wt%), plasticizer (polyethylene glycol, 0.5 wt%), lubricant (glycerin oil, 1 wt%), and solvent (water, 23 wt%). The resulting dough was extruded, dried at room temperature for 48 h, and sintered at 1200oC for 1 h in an electrical box furnace. The phase composition, microstructure, mechanical strength, and porosity of the sintered porous bodies were also investigated. With 5 and 10 wt% of TiO2, the bending strength of the sintered specimens is higher than 18MPa with porosity of more than 40%. |
