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Journal of the Korean Ceramic Society 1998;35(10): 1078. |
| 가열방법에 따른 LaCrO$_3$ 연소합성분말의 특성 |
| 정층환, 박홍규, 오석진, 박지연 |
| 한국원자력연구소 기능성재료 |
| Characterization of LaCrO$_3$ Powders Synthesized by Combustion Process with Different Heating Methods |
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| ABSTRACT |
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lanthanum chromite(LaCrO3) powder was synthesized by the combustion of a solution of metal nitrates La(NO3).6H2O and Cr(NO3)3.9H2O and urea. The pH of solution affected a yield of the combustion products but did not influence the morphology of the products. When the pH of the solution was in the range of 0.7-4, the yield of the combustion products was more than 90% The morphology of the combustion products was af-fected by heating methods for the solution. The hot-plate induced heating of the solution yielded powders hav-ing two-dimensionally interconnected agglomerates whereas microwave-induced heating produced a fine and non-agglomerated powders. The specific surface area(BET) of the combustion products using microwave-in-non-agglomerated powders. The specific surface area(BET) of the combustion products using microwave-in-duced heating method were larger(25~32m2) than that of hot plate heating method(10-14m2/g)/ |
| Key words:
Combustion synthesis, LaCrO$_3$, Heating methods |
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