| 학회 |
한국재료학회 |
| 학술대회 |
2008년 봄 (05/22 ~ 05/23, 상록리조트) |
| 권호 |
14권 1호 |
| 발표분야 |
에너지환경/생체재료 |
| 제목 |
Influence of citric acid to aluminium nitrate molar ratio on the combustion synthesis of alumina-zirconia nanopowders |
| 초록 |
The precursor for combustion synthesis was a mixed citrate/nitrate gel prepared from aluminium nitrate zirconium oxychloride and citric acid. The combustion synthesis of this gel produces nanometer-sized zirconia-alumina nanopowder. The influence of citrate/aluminium nitrate molar ratio of the precursor on the combustion rate and phase transformation was investigated. The α-Al2O3 phase transformation temperature differs with the citrate/aluminium nitrate molar ratios. X-ray diffraction analysis shows that the phases present at 1200℃ are α-Al2O3 and t-ZrO2 irrespective of initial citrate/aluminium nitrate molar ratio. TEM micrograph of calcined powder revealed that the particles size is significantly influenced by the citrate/aluminium nitrate molar ratio. EDAX confirms the presence of alumina and zirconia particle in the nanopowder calcined at 1200℃. |
| 저자 |
Dong-Sik Bae1, J. Chandradass2
|
| 소속 |
1School of Nano & Advanced Materials Science Engineering, 2Changwon National Univ. |
| 키워드 |
combustion synthesis; phases transition; Sol-gel process
|
| E-Mail |
|
