公开(公告)号：EP4194415A1

公开(公告)日：2023-06-14

申请号：EP22761934.3

申请日：2022-07-08

申请人： Aidite (Qinhuangdao) Technology Co., Ltd.

发明人： ZHANG, Jiaxin ,  NIE, Quanyi ,  ZHAO, Lijia ,  YU, Yong ,  DU, Zhenyu ,  ZHENG, Jingjing

IPC分类号： C03C4/12 ,  C03C10/04 ,  C03C1/04 ,  C03B32/02

摘要： Provided are a fluorescent glass ceramic with high transparency and a preparation method thereof. The fluorescent glass ceramic includes the following raw materials by mass percentage: 63 wt% to 70 wt% of SiO 2 , 13 wt% to 16 wt% of Li 2 O, 1 wt% to 6 wt% of Al 2 O 3 , 1 wt% to 10 wt% of K 2 O, 2 wt% to 6 wt% of P 2 O 5 , 0.5 wt% to 3.5 wt% of CeO 2 , 0 wt% to 4 wt% of an additive, 1 wt% to 4 wt% of a lanthanide oxide with an atomic number of 59 to 71, and 0 wt% to 8 wt% of a colorant. The fluorescent glass ceramic has a lithium metasilicate crystal as a principal crystalline phase, and the lithium metasilicate crystal has a layered or plate-like structure and a grain size of 0.1 µm to 1.5 µm. The fluorescent glass ceramic does not include pentavalent/hexavalent metal oxides. By optimizing a composition ratio of the raw materials and further controlling heat treatment conditions during the preparation process, an obtained lithium metasilicate-based glass ceramic has a fluorescent effect, high transparency, and extremely easy processing properties that are conducive to mass production.