| Synthesis and Sintering of Nano-structured Cordierite by Gel Cast |
| Paper ID : 1119-UFGNSM-FULL |
| Authors: |
|
Hosein Bartar Esfehani *1, Sedighe Asadinejad2, Hossein Mohagheghi Darranj3 1Metallurgy Department, Engineering School
Shahid Bahonar University of Kerman
Kerman , IRAN 2Research Consultant 3resercher |
| Abstract: |
| The purpose of this research is to investigate the crystallization behavior and sintering of cordierite (34.86 wt% Al2O3, 51.36 wt% SiO2 and 13.78 wt% MgO ) nano-grains formed by Gel cast. Cordierite-based glass ceramics samples are produced by a gelcasting process. The effects of acrylamide (AM) and methyl enebis acrylamide (MAM) and the sintering temperature on the green strength and the final bending strength are investigated. It was found that the samples with 2.5 wt% AM and 2.5 wt% MAM had the highest green bending strength. It is conceivable; however, that the green strength of AM samples is higher than MAM samples, associated with the inherent strength of the AM. Samples were followed by conventional sintering at different temperatures between 850° and 1220 °C. Results showed converting µ-cordierite to α–cordierite at 930 ˚C causes to make of micro-cracks. This leads to decrease in bending strength of Gel cast cordierite base glass samples heat treated at 930˚C compared to the other samples which are heat treated at temperature of 850˚C, 1020˚C and 1220˚C. Scanning Electron Microscopy observation illustrated the nano-grains of cordierite have the average particle size approximately between 30 nm to 100 nm for the sample sintered at 1020 ˚C. |
| Keywords: |
| Crystallization behavior, Nano-grains, Gel cast, Bending strength. |
| Status : Paper Accepted (Poster Presentation) |
