【摘要】 为研究氧化钆对磷酸钡玻璃热性能及微结构的影响,采用熔融-淬火法制备xGd₂O₃-（100-x）（50BaO-50P₂O₅）（x=0,2,4,6,8mol%）系列玻璃,研究了玻璃密度和摩尔体积及热相变特性,并利用X射线衍射（XRD）、扫描电镜（SEM）、红外光谱（FT-IR）、拉曼光谱（Raman）等测试技术对样品的微结构进行了分析。研究结果表明:当x≤6 mol%时,体系易形成透明的均质玻璃,当x=8 mol%时,样品中出现GdPO₄晶相;在玻璃形成范围内,增加Gd₂O₃含量,使玻璃微结构网络更致密,玻璃热稳定性得到改善;FT-IR和Raman光谱表明玻璃微结构主要是Q²结构单元,有少量Q⁰和Q¹结构单元。更多还原

【Abstract】 The glass samples with composition of xGd₂O₃-（100-x）（50BaO-50P₂O₅）（x=0,2,4,6,8 mol%） were prepared by melt-quenching method to study influence of gadolinium oxide on thermal properties and microstructure of brium phosphate glass.The galss density,molar volume and thermal phase transformation were investigated.In addition,XRD,SEM,FT-IR and Raman were used to study the microstructure of samples.Results showed that When x≤6mol%,the system was easy to form transparent homogeneous glass.The samples containing 8 mol%Gd₂O₃ showed the presence of GdPO₄ phase.Both the microstructure networks and the thermal properties were improved with the increase of Gd₂O₃.FT-IR and Raman data indicated that glass predominantly consists of Q² metaphosphate units,along with minor Q¹ and Q⁰ orthophosphate units.更多还原