Li Minghan, Dong Chuang, Ma Yanping, Jiang Hong
State Key Laboratory of Marine Resources Utilization in South China Sea, Hainan University, Haikou 570228, China.
Special Glass Key Lab of Hainan Province, Hainan University, Haikou 570228, China.
Nanomaterials (Basel). 2023 Jan 28;13(3):530. doi: 10.3390/nano13030530.
In this study, for the first time, a cluster-plus-glue-atom model was used to optimize the composition of lithium aluminosilicate glass-ceramics. Basic glass in glass-ceramics was considered to be a 16-unit combination of three-valence {MO} and one-valence {LiO} units. By adjusting the ratio of {MO} and {LiO}, the composition of basic glass could be optimized. After optimization, the average cation valence of the base glass was increased to 2.875. After heat treatment of the optimized base glass, it is found that the crystal size, proportion, and crystallinity changed obviously compared with that before optimization. The main crystalline phases of all the lithium aluminosilicate glass-ceramics prepared in this work were LiSiO and LiAlSiO All optimized glass-ceramics had an obvious improvement in the crystallinity, with one of the largest having a crystallinity of over 90%. Furthermore, its bending strength was 159 MPa, the microhardness was 967 Hv, and the visible light transmission rate exceeded 90%. Compared with the widely used touch panel cover glass, the optical properties were close, and the mechanical properties were greatly improved. Due to its excellent performance, it could be used in microelectronics, aerospace, deep-sea exploration, and other fields.
在本研究中，首次使用簇加胶合原子模型来优化锂铝硅酸盐微晶玻璃的成分。微晶玻璃中的基础玻璃被认为是三价{MO}和一价{LiO}单元的16单元组合。通过调整{MO}和{LiO}的比例，可以优化基础玻璃的成分。优化后，基础玻璃的平均阳离子价提高到2.875。对优化后的基础玻璃进行热处理后，发现其晶体尺寸、比例和结晶度与优化前相比有明显变化。本工作制备的所有锂铝硅酸盐微晶玻璃的主要晶相为LiSiO和LiAlSiO。所有优化后的微晶玻璃的结晶度都有明显提高，其中最大的结晶度超过90%。此外，其弯曲强度为159MPa，显微硬度为967Hv，可见光透过率超过90%。与广泛使用的触摸屏盖板玻璃相比，光学性能相近，机械性能有很大提高。由于其优异的性能，可用于微电子、航空航天、深海探测等领域。
