ZnO对MgO–Al_2O_3–SiO_2微晶玻璃结构与透光性能的影响(英文)  

Effect of Zinc Oxide on Structure and Transmission Property of MgO–Al_2O_3–SiO_2 Glass-Ceramics

作　　者：汤李缨[1] 王静[1] 程金树[1] 田培静[1] 

机构地区：[1]武汉理工大学,硅酸盐教育部重点实验室,武汉430070

出　　处：《硅酸盐学报》2011年第1期147-151,共5页Journal of The Chinese Ceramic Society

摘　　要：研究了MgO–Al2O3–SiO2系统微晶玻璃中ZnO含量对微晶玻璃结构及透光性能的影响。采用差热分析、X射线衍射、场发射扫描电镜、紫外–可见–近红外分光光度计对材料进行测试。结果表明:透明微晶玻璃主晶相为尖晶石晶体;ZnO含量的增加使玻璃析晶程度提高,析出晶体尺寸变小且分布更加均匀;添加2%(质量分数,下同)的ZnO可使晶粒尺寸显著减小,得到透明微晶玻璃样品平均晶粒尺寸为27 nm,在可见光区透过率大于85%;当ZnO含量从0%增加到4%时,透明微晶玻璃的紫外吸收极限逐渐向短波方向移动。The influence of zinc oxide（ZnO） addition on the microstructure and transparent property of MgO–Al2O3–SiO2 glass-ceramics was investigated by using differential thermal analysis,X-ray diffraction,field emission–environment scanning electron microscope and ultraviolet-visible-near infrared scanning spectrophotometer.The results show that cubic spinel is the main crystalline phase in the transparent glass-ceramics.The crystallinity increased,the crystalline grain size decreased and became more uniform with increasing ZnO content.The average grain size was 27 nm,and the transmittance of the glass-ceramic was more than 85% in visible spectra region at ZnO content of 2%（in mass,the same as below）.The ultraviolet cut-off wavelength moved to the shorter wave when ZnO content increased from 0% to 4%.

关 键 词：氧化锌 镁铝硅微晶玻璃 尖晶石 光性能 

分 类 号：TQ171[化学工程—玻璃工业]