Synthesis of Uniform Spherical Alumina Powders by Homogeneous Precipitation

摘要：

　　Uniform spherical alumina powders have been synthesized via homogeneous precipitation method from aluminum nitrate using urea as the precipitant.The amount of ammonium sulfate has a significant effect on morphology and particle size of the precursor powders.It was found that spherical particles can be obtained when the molar ratio of ammonium sulfate to aluminum nitrate is about 0.72 and the concentration of the aluminum nitrate is 0.005M.Spherical alumina particles with 400 nm in diameter were obtained by calcining the precursors at 1100℃ for 4 hrs.

关键词： Aluminum nitrate Alumina Uniform spherical powders Homogeneous precipitation

作者: Xiaojuan Xu Xudong Sun Yaqiu Liang Wei Qiu

作者单位: College of Physics,Liaoning University,Shenyang,Liaoning 110036,China;Key Laboratory for Anisotropy Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),School of Materials an College of Physics,Liaoning University,Shenyang,Liaoning 110036,China

会议类型: 国际会议

会议名称: 2013 International Conference on Energy Research and Power Engineering(2013能源研究与电力工程国际会议)(ERPE2013)

会议地点: 郑州

会议语种:英文

页码: 855-859

在线出版日期: 2013-05-24（万方平台首次上网日期，不代表论文的发表时间）