硅酸盐通报2024，Vol.43Issue(10)：3834-3842,9.
低膨胀锂铝硅微晶玻璃烧结-析晶行为与性能研究
Sintering-Crystallization Behavior and Properties of Low Expansion Lithium Aluminosiliate Glass-Ceramics
摘要
Abstract
Low expansion Li2O-Al2O3-SiO2(LAS)glass-ceramics were prepared using sintering method.The effect of ZnO partially substitution for Li2O on the microstructure,sintering behavior,crystallization behavior and properties of LAS glass-ceramics was investigated.The results show that the substitution of ZnO for Li2O reduces the initial crystallization temperature of LAS glass-ceramics,leading to significant amount of Li2Al2Si3O10 phase precipitating out after holding at 800 ℃ for 10 min,which hinders the sintering shrinkage of glass.In contrast,the LAS glass-ceramics without ZnO exhibits slower crystallization at 800℃,which is beneficial for sintering densification process.When the sintering temperature is 1 100℃,the main crystalline phase present in glass-ceramics is identified as β-spodumene.The coefficient of thermal expansion of glass-ceramics without ZnO is 1.747 x 10-6 K-1,the flexural strength is 138.4 MPa,the dielectric constant is 3.52 and the dielectric loss is 0.001 6.关键词
微晶玻璃/β-锂辉石/Li2O-Al2O3-SiO2/低膨胀/烧结Key words
glass-ceramics/β-spodumene/Li2O-Al2O3-SiO2/low expansion/sintering分类
化学化工引用本文复制引用
陈丹丹,吕大娟,陈巧,刘佳,韩建军,王静,李路瑶..低膨胀锂铝硅微晶玻璃烧结-析晶行为与性能研究[J].硅酸盐通报,2024,43(10):3834-3842,9.基金项目
光纤光缆先进制造与应用技术全国重点实验室(长飞公司)开放课题(SKLD2207) （长飞公司）
