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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 8    No. 1    March 1998

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PREPARATION OF HIGH-PURITY AND NANOMETER-SCALE BARIUM TITANATE POWDERS
Wang Kaiyi, Liao Bo, Liu Yexiang, Wei Qing, Qian Dong, Chen Xiaoyi and Lai Deyong

Department of Chemistry,Central South University of Technology, Changsha 410083, P. R. China

Abstract:By using H2TiO3 and Ba(NO3)2 as the raw materials, and (NH4)2CO3 as the precipitant, high purity(>99.7%) and superfine(<1μm) BaTiO3 powders were obtained by co-precipitation method. Then the nanometer-scale BaTiO3 powders were prepared with the mechanophysical solid effect equipment. The equipment of the present process is characterized by simplicity, convenience and low capital cost. Hence it is suitable for industrial production.

 

Key words: barium titanate powder co-precipitation mechanophysical solid effect high purity  nanometer-scale

ISSN 1672-7029
CN 43-1423/U

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