R_2O_3(R=Al,B)对含磷硅酸盐乳浊玻璃显微结构和热膨胀行为的影响  

Effects of R_2O_3(R=Al,B) on Microstructure and Thermal Expansion Behavior of Phosphorus-containing Silicate Opal Glasses

作　　者：高彬[1] 刘树江[1] 

机构地区：[1]山东轻工业学院山东省玻璃与陶瓷重点实验室,济南250353

出　　处：《硅酸盐通报》2010年第1期176-179,183,共5页Bulletin of the Chinese Ceramic Society

基　　金：山东省中青年科学家奖励基金项目(2008BS04004);济南科技明星计划(20080118)

摘　　要：采用传统的熔融法制得了含P2O5的硅酸盐乳浊玻璃,利用XRD、SEM和EDS等手段研究了玻璃乳浊机理和微观结构,并且讨论了Al2O3和B2O3相对含量对显微结构和热膨胀系数的影响。结果表明:采用P2O5为乳浊剂,可以得到乳浊效果明显的硅酸盐系统乳浊玻璃,玻璃的乳浊是由亚稳分相的不稳分解造成的;用3wt%B2O3取代Al2O3后,玻璃试样析出少量晶体,第二相颗粒的尺寸变得不均匀,热膨胀系数变大。Phosphorus-containing silicate opal glasses were prepared by means of conventional melt quenching technology,and opaque mechanism and microstructure of the glasses were investigated by XRD,SEM and EDS methods.The influence of R2O3（R=Al or B） content on the microstructure and the thermal expansion coefficient was investigated. The results show that heavy opaque glasses are obtained due to the addition of P2O5,and this is results from unstable disassemble phase separation; with substituting 3wt%B2O3 for Al2O3,traces of unknown crystals are precipitated and particles size becomes inhomogenous,and thermal expansion coefficient increases greatly.

关 键 词：乳浊玻璃 分相 显微结构 热膨胀系数 

分 类 号：TQ171[化学工程—玻璃工业]