以二氧化钛为原料制备多孔平板陶瓷膜。制备过程中以翘曲率为实验指标进行正交实验,考察去离子水用量、成型压力、烧结温度对膜片成型性能的影响,并利用扫描电镜(SEM)观测膜片微观结构。结果表明:这三个因素分别对TiO2陶瓷膜翘曲率的影...以二氧化钛为原料制备多孔平板陶瓷膜。制备过程中以翘曲率为实验指标进行正交实验,考察去离子水用量、成型压力、烧结温度对膜片成型性能的影响,并利用扫描电镜(SEM)观测膜片微观结构。结果表明:这三个因素分别对TiO2陶瓷膜翘曲率的影响显著,且以烧结温度的影响最大;除成型压力与烧结温度的交互作用对翘曲率有较小影响外,其余因素间交互作用无影响;在实验范围内,采用去离子水量3.3 ml/12 g TiO2、压力0.5 MPa、烧结温度1250℃制备的TiO2陶瓷膜翘曲率最小,该操作条件制备得到的陶瓷膜结构致密,平均孔径为1～2μm。展开更多
Al2O3 ceramic powder was applied to modify the large pores defects on the surface of the porous metal Ti support,in situ oxidation method was a convenient method to prepare defect free ceramic/Ti composite membranes o...Al2O3 ceramic powder was applied to modify the large pores defects on the surface of the porous metal Ti support,in situ oxidation method was a convenient method to prepare defect free ceramic/Ti composite membranes on this basis.In situ oxidation conditions experimental results show that the best condition for preparing the TiO2-Al2O3/Ti composite membrane is under 800°C for 2 h,and the microstructure and pore sizes of the TiO2-Al2O3/Ti composite membranes are affected obviously.The thickness and composition of the TiO2/Ti composite membranes are determined by SEM and XRD completely.The pore size distribution of the composite membrane is measured by bubble pressure method,the most probable aperture is about 3.12μm,while the average pore size of defect free TiO2-Al2O3/Ti is about 3.23μm.After ultrasonic treatment,the slight weight change of membranes reveals no observable change,which indicates that TiO2-Al2O3/Ti composite membranes maintain a good stability.展开更多
文摘以二氧化钛为原料制备多孔平板陶瓷膜。制备过程中以翘曲率为实验指标进行正交实验,考察去离子水用量、成型压力、烧结温度对膜片成型性能的影响,并利用扫描电镜(SEM)观测膜片微观结构。结果表明:这三个因素分别对TiO2陶瓷膜翘曲率的影响显著,且以烧结温度的影响最大;除成型压力与烧结温度的交互作用对翘曲率有较小影响外,其余因素间交互作用无影响;在实验范围内,采用去离子水量3.3 ml/12 g TiO2、压力0.5 MPa、烧结温度1250℃制备的TiO2陶瓷膜翘曲率最小,该操作条件制备得到的陶瓷膜结构致密,平均孔径为1～2μm。
基金Projects(212006065,21666018)supported by the National Natural Science Foundation of China
文摘Al2O3 ceramic powder was applied to modify the large pores defects on the surface of the porous metal Ti support,in situ oxidation method was a convenient method to prepare defect free ceramic/Ti composite membranes on this basis.In situ oxidation conditions experimental results show that the best condition for preparing the TiO2-Al2O3/Ti composite membrane is under 800°C for 2 h,and the microstructure and pore sizes of the TiO2-Al2O3/Ti composite membranes are affected obviously.The thickness and composition of the TiO2/Ti composite membranes are determined by SEM and XRD completely.The pore size distribution of the composite membrane is measured by bubble pressure method,the most probable aperture is about 3.12μm,while the average pore size of defect free TiO2-Al2O3/Ti is about 3.23μm.After ultrasonic treatment,the slight weight change of membranes reveals no observable change,which indicates that TiO2-Al2O3/Ti composite membranes maintain a good stability.
