董伟,卢金山

• 1:南昌航空大学材料科学与工程学院

摘要(Abstract)：

通过熔融法制备了掺杂CeO2和Nd2O3的Li2O-Al2O3-SiO2(LAS)透明微晶玻璃,利用差热分析仪、X射线衍射仪、扫描电镜、紫外可见分光光度计等检测技术,研究稀土掺杂对Li2O-Al2O3-SiO2(LAS)玻璃析晶行为以及微晶玻璃的微观结构和光学性能的影响。稀土掺杂明显提高玻璃的析晶活化能和晶化温度,抑制了微晶玻璃由石英固溶体向锂辉石固溶体的转变,使LAS微晶玻璃的热稳定性增强。微晶玻璃晶化后紫外吸收边出现"红移",掺杂稀土的微晶玻璃晶粒出现细化。稀土离子的能级跃迁,导致微晶玻璃的颜色发生变化,并在晶界光散射和晶格光吸收的共同作用下,使微晶玻璃的透过率降低。

关键词(KeyWords)： 微晶玻璃;稀土掺杂;光学性能

Abstract:

Keywords:

基金项目(Foundation): 航空科学基金资助项目(2007ZF56011)

作者(Author): 董伟,卢金山

DOI: 10.13289/j.issn.1009-6264.2011.08.006

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