Preparation of Lithium Niobate Powders by Mechanochemical Process

摘要：

　　Lithium niobate powders were prepared by mechanochemical treatments using Li2CO3 and Nb2O5 as raw materials.Scanning electron microscopy (SEM),X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FT-IR) were employed to evaluate the morphologies and structures of samples.The mechanism of LiNbO3 formation of the ground mixture samples was discussed.The crystal structure of mixture was collapsed into a disordered structure,which increased with increasing grinding time.At the same time,the specific surface area increase and the bond energy reduction of the mixture occurred.Consequently,high energy ball milling enables increase of the internal energy,reduction of the activation energy,and improvement of the uniform mixing stage,which resulted in direct formation of singal phase LiNbO3 at a low temperature (500℃).However,the temperature must reach 1200℃ for the traditional method.

关键词： Lithium niobate Preparation Mechanochemical process

作者: Juhua Luo

作者单位: Jiangsu Provincial Key Laboratory of Eco-Environmental Materials,Yancheng Institute of Technology, Yancheng, 224051, China

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 3401-3405

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）