摘要
以石英砂为主要原料,采用液相烧结法,经半干压成型制备石英质多孔陶瓷。采用SEM对多孔陶瓷的显微结构进行表征。探讨了烧结温度、保温时间对多孔陶瓷孔隙率及断裂强度的影响。结果表明:随着烧结温度升高,保温时间延长,石英质多孔陶瓷的孔隙率下降、断裂强度不断增大;最佳烧结温度为1250℃,最佳保温时间为30min。在最佳烧结工艺条件下,制备得到高孔隙率陶瓷,孔结构单一且孔径分布较窄,平均孔径大约为12.41μm。
Porous ceramics were prepared by means of dry pressing and liquid-phase sintering,using quartz sand as main materials.Scanning electronic microscopy（SEM） was employed to characterize the microstructure of porous ceramics.The effects of sintering process（sintering temperature and holding time） on the performance（porosity and breaking strength） of porous ceramics were investigated.The results show that the porosity decreased while the breaking strength increased with the increasing of the sintering temperature and the soaking time;the optimal sintering temperature and holding time are 1250℃ and 30min.Porous ceramics obtained under the optimal sintering conditions have high porosity and uniform pore size distribution with the average pore diameter of 12.41μm.
出处
《陶瓷学报》
CAS
北大核心
2011年第1期11-16,共6页
Journal of Ceramics
基金
国家高技术研究发展计划(863计划)资助项目(编号:2007AA03Z524)
国家自然科学基金资助项目(编号:50872093)
海南省教育厅基金资助项目(编号:Hjkj2010-11)
海南大学科研基金
关键词
多孔陶瓷
烧结温度
保温时间
孔隙率
断裂强度
porous ceramics
sintering temperature
holding time
porosity
breaking strength
