摘要
用稻壳为硅源和成孔剂,以Nd2O3为添加剂,在1350℃烧成了多孔堇青石陶瓷。利用XRD分析了试样在烧结过程中的物相变化,利用SEM观察了烧结试样的显微结构,并测定了烧结试样的抗弯强度、气孔率。结果表明:与未掺Nd2O3的试样相比,掺杂3wt%Nd2O3后,烧结试样的气孔率无明显变化,但其抗弯强度增加了约4倍,且堇青石的形成温度显著降低。
Porous cordierite ceramic was prepared at 1350 ℃ using the rice husk as silica source and pore forming agent,Nd2O3 as the additive. The mineral phase changes during sintering were analyzed by X-ray diffraction （ XRD） ,the microstructures of the sintered samples were observed by scanning electronic microscopy （ SEM） ,and the bending strength and porosity of the porous cordierite samples were tested. The results show that the porosity of the sample adding 3 wt% Nd2O3 presents unobvious changes,but the bending strength of the porous cordierite increases about 4 times ,and the forming temperature of cordierite greatly decreased significantly.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2010年第4期1025-1029,共5页
Journal of Synthetic Crystals
基金
江苏省科技厅自然科学基金项目(BK2009671)
江苏省教育厅自然科学基金项目(07KJB430123)
江苏省生态环境材料重点建设实验室开放基金项目(XKY2009033)
