Hot Pressing of Perovskite LaNiO3
Open Access
- 1 January 1989
- journal article
- Published by Ceramic Society of Japan in Journal of the Ceramic Society of Japan
- Vol. 97 (1130) , 1129-1133
- https://doi.org/10.2109/jcersj.97.1129
Abstract
The perovskite powder of (La, Sr)NiO3 system was prepared using acetate precursors and then reacted with Na2CO3 flux at 900°C for 24 hours to produce the perovskite single phase after washing away excess Na+ ion. The obtained powder was sintered at temperatures between 860° and 1180°C for 10 hours in the flow of O2 gas by hot press. The maximum temperature of the stability of the perovskite LaNiO3 phase is limited to the temperature at about 1040°C in this hot pressing condition. The bulk density of LaNiO3 which was sintered at 1040°C was greatly increased to 97 percentage of the theoretical value with a small amount of Na addition. The maximum stability temperature of perovskite La1-xSrxNiO3 phase seems to be lower than that of LaNiO3.Keywords
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