Preparation,crystallization,microstructure and dielectric properties of lead bismuth titanate borosilicate glass ceramics

作     者：Chandkiram RGAUTAM Abhishek MADHESHIYA Ranabrata MAZUMDER 

作者机构：Advanced Glass and Glass Ceramic Research LaboratoryDepartment of PhysicsUniversity of LucknowLucknow 226007India Department of Ceramic EngineeringNational Institute of TechnologyRouerkela 769008India 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2014年第3卷第3期

页      面：194-206页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：The authors are gratefully acknowledged to the Uttar Pradesh Council of Science and Technology Lucknow(India)for financial support under the“Young Scientist Scheme”as major research project No.CSTT/YSS/D-3913.Authors are also thankful to Dr.Atul Khanna associate professor for his constant support and to extending the XRD measurement facility at Department of Physics Guru Nanak Dev University Amritsar 143005 India 

主　　题：lead bismuth titanate differential thermal analysis(DTA) crystallization scanning electron microscopy(SEM) dielectric behavior 

摘      要：Various bulk and transparent glasses were prepared by rapid melt quenching technique in the glass system 55[(Pb_(x)Bi_(1-x))TiO_(3)]-44[2Si_(O)2B_(2)O_(3)]-La2O3(x=0-0.7).The X-ray diffraction(XRD)studies of the glass samples confirmed the amorphous *** differential thermal analyses(DTA)were carried out from room temperature to 900℃with a heating rate of 10℃/*** DTA patterns of the samples showed one or more exothermic sharp peaks shifting towards lower temperature side with increasing concentration of bismuth oxide(BiO).On the basis of DTA results,the solid solution of bismuth titanum oxide(Bi_(2)Ti_(2)O_(7))/lead bismuth titanium oxide(Pb3Bi4Ti6O21)was precipitated in borosilicate glassy matrix as a major *** glasses were subjected to 4 h and 8 h heat treatment schedules to convert into glass *** analysis of these glass ceramic samples showed that the major crystalline phase of the entire glass ceramic samples with 0≤x≤0.5 is found to have cubic crystal structure,while it is tetragonal for glass ceramic sample with x=*** scanning electron microscopy(SEM)micrographs indicated the uniform distribution of Bi_(2)Ti_(2)O_(7)and Pb3Bi4Ti6O21 crystallites in the glassy matrix.