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Journal of the Korean Ceramic Society 1994;31(8): 879. |
| 공침법을 이용한 $ZrO_2+12 mol% CeO_2$ 분말합성 및 소결특성 |
| 강희복, 김윤호 |
| 한국과학기술연구원 세라믹스연구부 |
| The Synthesis of $ZrO_2+12 mol% CeO_2$ Powders by Coprecipitation Technique and Their Sintering Behaviors |
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| ABSTRACT |
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Coprecipitation technique was used to synthesize ZrO2+12 mol% CeO2 powders with ZrOCl2.8H2O and Ce(NO3)3.6H2O as starting materials. The powders were dried on different conditions such as distilled water, ethanol, and azeotropic distillation. The powders prepared by azeotropic distillation showed weak aggregation of particles and the average particle size of powders calcined at 85$0^{circ}C$ for 1 hour was 0.19 ${mu}{textrm}{m}$. The optimum sintering temperature and holding time are 130$0^{circ}C$ and 2.5~10 hours, respectively. Beyond the optimum conditions, a phase transition from tetragonal to monoclinic causes to produce cracks in the sintered bodies and to decrease the density. |
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