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Starch consolidation of porous fused silica ceramics |
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| รหัสดีโอไอ | |
| Creator | Karn SERIVALSATIT |
| Title | Starch consolidation of porous fused silica ceramics |
| Contributor | Kedkaew KANLAI, Thanakorn WASANAPIARNPONG, Bordin WIRATPHINTHU |
| Publisher | Metallurgy and Materials Science Research Institute, Chulalongkorn University |
| Publication Year | 2561 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 28 |
| Journal No. | 1 |
| Page no. | 71-76 |
| Keyword | Porous ceramics, Fused silica, Glutinous rice flour, Starch consolidation |
| URL Website | http://ojs.materialsconnex.com/index.php/jmmm/index |
| Website title | Journal of Metals, Materials and Minerals |
| ISSN | 8576149 |
| Abstract | Starch consolidation is a forming technique, in which ceramic suspension is consolidated by gelatinization of starch under suitable temperature. This technique is promising for fabricating porous ceramics because starch can act as a binder as well as a pore former. In this study, porous fused silica ceramics were prepared by starch consolidation using glutinous rice flour as a gelling agent. The 29 vol% solid loading of fused silica slurries with the addition of glutinous rice flour were prepared. After mixing the slurries were poured into a plastic mold and kept in an oven at 75บC for an hour. The green samples were dried and sintered at a temperature range of 900-1300บC for an hour. Bulk density and compressive strength of the fused silica ceramics with 7 wt% glutinous rice flour sintered at 1150บC were 1.26 g/cm3 and 13.33 MPa, respectively. The phase of the sintered specimens remained amorphous with very low thermal expansion coefficient of 0.58 x 10-6บC-1. |
