The (33.33-X)Li₂O:66.66SiO₂-XCaO (X = 0, 1 and 2 mol %) glasses have been synthesized by melt quenching technique and then converted into glass-ceramics by a two-stage heat-treatment schedule. ²⁹Si MAS-NMR study indicates that the CaO addition at the cost of Li₂O increases Q³, Q² units and decreases Q⁴ units in glasses. The glass transition temperature decreases with the addition of CaO. All the glass-ceramics exhibit Li₂Si₂O₅ phase and the phase concentration decreases from 61.2 ± 0.2 to 48.93 ± 0.2 wt% with the addition of CaO. The glass–ceramic containing 1 mol % CaO has optimum conditions to exhibit the highest microhardness 5.95 ± 0.16 GPa.

采用熔融淬火技术合成了(33.33-X)Li ₂ O:66.66SiO ₂ -XCaO (X = 0、1 和 2 mol %) 玻璃，然后通过两阶段热处理工艺将其转化为玻璃陶瓷。^{29 Si MAS-NMR研究表明，以Li} ₂ O为代价添加CaO会增加玻璃中的Q ³、Q ²单元并减少Q ^4单元。玻璃化转变温度随着CaO的添加而降低。所有微晶玻璃均表现出Li ₂ Si ₂ O ₅随着 CaO 的添加，相浓度从 61.2 ± 0.2 降低到 48.93 ± 0.2 wt%。含有 1 mol% CaO 的微晶玻璃具有表现出最高显微硬度 5.95 ± 0.16 GPa 的最佳条件。