Preparation of Al2O3−SiO2−TiO2−ZrO2 composite ceramic membranes by Sol-Gel method

Wu Jianfeng; Bai Zhanliang; Xu Xiaohong; Zhang Ying

doi:10.1007/BF02870870

Journal of Wuhan University of Technology Materials Science Edition ›› 2005, Vol. 20 ›› Issue (1) : 42 -45. DOI: 10.1007/BF02870870

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Preparation of Al₂O₃−SiO₂−TiO₂−ZrO₂ composite ceramic membranes by Sol-Gel method

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Abstract

Al₂O₃−SiO₂−TiO₂−ZrO₂ supported membranes were prepared by Sol-Gel method. These composite ceramic membranes are level, even and no macro crack. There exist several crystalline phases such as Al₂O₃, TiO₂ (anatase), Al₂SiO₅, and ZrO₂ in these membranes. Changing the molar ratio of Al:Si:Ti:Zr, the kinds and content of crystal phases of composite membranes could be different, which may lead to a variety of microstructure of membranes. The surface nonoscale topography and microstructure of membranes were investigated by XRD, SEM, AFM, EPMA. The effects of additives and heat treatments on the surface nanoscale topography and microstructure of composite ceramic membranes were also analyzed.

Keywords

sol-gel method / Al₂O₃−SiO₂−TiO₂−ZrO₂ composite ceramic membranes / surface nanoscale topography / microstructure

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Wu Jianfeng, Bai Zhanliang, Xu Xiaohong, Zhang Ying. Preparation of Al₂O₃−SiO₂−TiO₂−ZrO₂ composite ceramic membranes by Sol-Gel method. Journal of Wuhan University of Technology Materials Science Edition, 2005, 20(1): 42-45 DOI:10.1007/BF02870870

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