摘要
以Na2CO3、Al2O3、SiO2、NaF、GdF、DyF、YF、(HN3)2HPO4为原料,利用熔融急冷法制备了GdPO4玻璃陶瓷以及Y^3+、Dy^3+、Y^3+/Dy^3+掺杂的GdPO4玻璃陶瓷,通过DSC、XRD、SEM、紫外可见光度计等研究了玻璃陶瓷的制备工艺、相成分、微观结构和透光性。结果表明:确定的热处理规程为570℃核化2h再670℃晶化2h,得到的玻璃陶瓷外观透明、成型良好,在玻璃基体中有明显的微晶。在GdPO4中掺杂稀土有利于微晶从玻璃基体中析出,其中Dy^3+掺杂GdPO4玻璃陶瓷中的微晶尺寸最大。所有的玻璃陶瓷在可见光区具有高透过性,Dy^3+掺杂的GdPO4玻璃陶瓷的可见光区透光率低于其他样品。
GdPO4 and Y3+、Dy3+、Y3+/Dy3+ doped GdPO4 glass ceramicswere fabricated by a melt quenching method,using Na2CO3,Al2O3,SiO2, NaF, GdF, DyF, YF,(HN3)2HPO4 as raw materials. The preparation process, phase composition, microstructure and transmittance of the glass-ceramics were studied by DSC, XRD, SEM and ultraviolet-visible spectrophotometer. The results show that the suitable heat treatment procedures include nucleation at 580 ℃ for 2 h and crystallization at 670 ℃ for 2 h. The obtained glassceramics have transparent appearance, good molding and obvious microcrystalline in the glass matrix.The doping of rare earth in GdPO4 is beneficial to the crystallization from glass matrix. Among them, Dy3+ doped GdPO4 glassceramics have the largest microcrystalsizes. All glass ceramics have high transmittance in the visible region, but the transmittance of Dy3+ doped GdPO4 glass ceramics is relatively lower.
作者
张宇琛
郭磊
胡成武
李艳艳
颜正
ZHANG Yuchen;GUO Lei;HU Chengwu;LI Yanyan;YAN Zheng(School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China;Tianjin Key Laboratory of Advanced Joining Technology,Tianjin University,Tianjin 300072,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2020年第2期39-44,共6页
China Ceramics
基金
国家自然科学基金(51971156)。
关键词
玻璃陶瓷
GdPO4
掺杂
析晶行为
透光性
Glass ceramics
GdPO4
Fabrication procedures
Crystallization behavior
Transparency
