P_2O_5/CaO对磷酸盐乳浊玻璃分相析晶的影响  

Effect of P_2O_5/CaO on Crystallization and Phase Separation in Phosphatic Opal Glass

作　　者：汪庆卫[1,2] 杨占峰[1,2] 宁伟[1,2] 

机构地区：[1]东华大学材料科学与工程学院 [2]东华大学先进玻璃制造技术教育部工程研究中心,上海201620

出　　处：《东华大学学报（自然科学版）》2011年第1期12-15,共4页Journal of Donghua University(Natural Science)

基　　金：国家科技部科研院所资助项目(2009EG111009)

摘　　要：采用X射线衍射、扫描电镜和红外光谱等分析测试手段,研究了Na2O-MgO-SiO2乳浊玻璃系统中,P2O5/CaO不同质量比对磷酸盐玻璃显微结构及乳浊性能的影响.结果表明:P2O5能促进分相形成;当P2O5/CaO质量比达到0.57时,开始出现二次分相;如果增加过量P2O5,会产生析晶.通过调节P2O5/CaO质量比可以控制分相液滴尺寸,并使玻璃产生二次分相获得最佳的乳浊效果.In the Na2O-MgO-SiO2 opal glass system,the effects of mass ratio of P2O5/CaO on the microstructure and opacifying properties were investigated by means of XRD,SEM and IR spectrum.The results showed that P2O5 could boost phase separation.When the mass ratio of P2O5/CaO reached to 0.57,the secondary phase separation took place.Excessive P2O5 would result in the crystallization.The ratio of P2O5/CaO could relate to the size of separated particle,and achieved the best opacifying effects attributed to the secondary phase separation.

关 键 词：二次分相 乳浊玻璃 显微结构 析晶 

分 类 号：TQ174.76[化学工程—陶瓷工业]