ZrO2 nanopowders prepared by low-temperature vapor-phase hydrolysis

2019-11-09 04:11:56

phase ZrO2 size prepared powder

责任者: Bin Xia;Lianyun Duan;Youchang Xie 单位: Coll. of Chem. & Molecular Eng., Peking Univ., China 来源出处: Journal of the American Ceramic Society(J. Am. Ceram. Soc. (USA)),2000/05/,83(5):1077-80 摘要: ZrO2 powder is prepared by low-temperature vapor-phase hydrolysis of ZrCl4. TG-DTA, XRD, Raman, BET, and TEM methods are used to investigate the particle size, phase composition, and agglomeration before and after heat treatment. The results show that the as-prepared ZrO2 powder is characterized by large surface area (150 m2/g), fine grain size (5.8 nm), and weak agglomeration. Additionally, the as-prepared ZrO2 powder shows predominantly tetragonal phase attributed to a grain size effect. This route is free of powder drying and calcination processes that are essential for wet chemical preparation, contributing to less agglomeration 关键词: aggregation;differential thermal analysis;grain size;heat treatment;nanostructured materials;particle size;powder technology;powders;Raman spectra;transmission electron microscopy;X-ray diffraction;zirconium compounds;ZrO2 nanopowders;low-temperature vapor-phase hydrolysis;TG-DTA;XRD;TEM method;BET method;Raman method;particle size;phase composition;agglomeration;heat treatment;as-prepared ZrO2 powder;surface area;tetragonal phase;grain size effect;ZrCl4;ZrO2