CeO_2对Al_2O_3基泡沫陶瓷过滤器性能的影响

Effect of CeO_2 on Properties of Al_2O_3-based Ceramic Foam Filters

采用有机泡沫浸渍工艺,研究了CeO2对氧化铝基泡沫陶瓷过滤器性能的影响。通过检测试样的常温耐压强度、热震稳定性、通透率等性能以及利用扫描电镜(SEM)对试样的显微结构进行研究,较为详细地探讨不同含量的CeO2对氧化铝基泡沫陶瓷过滤器性能的影响。结果表明,使用CeO2作添加剂可促进液相的生成,降低氧化铝基泡沫陶瓷的烧成温度,改善瓷体的微观组织结构和性能。实验结果表明,当CeO2含量为3%时其热震稳定性和抗压强度最佳。

The effects of CeO2 on the properties of ceramic foam by using polymeric sponge impregnation process are studied.The influences of CeO2 different contents on properties of ceramic foam filter,such as cold compression strength（CCS）,thermal shock resistance,volume weight,are investigated.The microstructure of samples is analyzed using scanning electron microscopy（SEM）.The results show that the CeO2 used as sintering additives can promote the formation of a liquid phase,reduce the sintering temperature of alumina-based ceramic foam,and improve microstructure and properties of the ceramic.The samples with the best thermal shock resistance and high compression strength are obtained by adding 3% CeO2 respectively.