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Crystallization kinetics of Al 2 O 3 -28mol%Lu 2 O 3 glass and full crystallized transparent Lu 3 Al 5 O 12 -based nanoceramics

Transparent Lu 3 Al 5 O 12 (LuAG) ceramics have become very promising phosphor matrix materials due to their high doping concentration and luminous efficiency, thermal conductivity and thermal stability. However, LuAG transparent ceramics prepared by traditional powder sintering method are facing se...

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Published in:Ceramics international 2024-03, Vol.50 (5), p.8073-8080
Main Authors: Fu, Jie, Zhang, Ying, Ma, Zhibiao, Bai, Linghan, Fan, Ruyu, Xu, Wenlong, Allix, Mathieu, Genevois, Cécile, Veron, Emmanuel, Yang, Yafeng, Wang, Hui, Li, Jianqiang
Format: Article
Language:English
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Summary:Transparent Lu 3 Al 5 O 12 (LuAG) ceramics have become very promising phosphor matrix materials due to their high doping concentration and luminous efficiency, thermal conductivity and thermal stability. However, LuAG transparent ceramics prepared by traditional powder sintering method are facing several problems, such as time-consuming and energy-consuming, complex preparation process, high purity of raw material powders and large crystalline grain size. Here we report facile elaboration of transparent LuAG-Al 2 O 3 two-phase nanocrystalline ceramics through pressureless crystallization (1000 ℃, 2 h) of 72 mol.% Al 2 O 3 -28 mol.% Lu 2 O 3 (ALu28) bulk glasses combined with the crystallization kinetics analysis. The results of the crystallization kinetics analysis show that the ALu28 bulk glasses have a low activation energy (
ISSN:0272-8842
DOI:10.1016/j.ceramint.2023.12.136