Influence of Calcining Temperature on the microstructure of LaPO4 powders

摘要：

Nanometer LaPO4 powders were synthesized by liquid-liquid direct precipitation method. La(NO3)3·6H2O and (NH4)3PO4·3H2O were used as raw materials. The calcining temperature was 900℃, 1000℃, 1100℃, respectively. DTA result shows that the LaPO4 precursor is LaPO4·4H2O. The calicined powders were characterized by X-ray powder diffraction (XRD) and Scanning Electron Microscope (SEM), and exhibited a pure LaPO4 phase with a monazite structure about 50-100 nm in diameter size. With the calcining temperature increasing, the crystallization of the LaPO4 became better and the grain shape changed from elongated grain shape to spherical grain shape.

关键词： LaPO4 calcining temperature direct precipitation method monazite

作者: Zifeng Liu Xin Wang Yansheng Yin Qiang Liu

作者单位: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People’s R Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, People’s College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People’s R

会议类型: 国际会议

会议名称: 第二届多功能材料与结构国际会议

会议地点: 青岛

会议语种:英文

页码: 2231-2234

在线出版日期: 2009-10-09（万方平台首次上网日期，不代表论文的发表时间）