The crystallization tendency resulting from liquid-liquid separation in CaO-MgO-Al₂O₃-SiO₂-Fe₂O₃ glass-ceramic has attracted much attention. However, the structural origin of this effect is still poorly understood. In this paper, spectroscopies were used to analyze the silicon-oxygen network structure of the basic glass with different iron oxide contents. With a focus on the microenvironment of iron atoms, the isolated iron was converted to clusters as the Fe₂O₃ content increased. Based on the above findings, two iron-containing cluster structures that affect the glass stability and crystallization potential are proposed. Liquid-liquid phase separation was clearly observed by transmission electron microscopy. Thermal analysis proved that the increase in the formation of clusters weakened the glass stability. This study not only provided data for understanding the exceptional microstructure of CaO-MgO-Al₂O₃-SiO₂-Fe₂O₃ glass but also yielded profound insights into the metastability of glass-ceramics.

从以CaO-MgO的铝液-液分离得到的结晶倾向₂ ö ₃ -SiO ₂ -的Fe _2个ö ₃玻璃陶瓷备受关注。但是，这种作用的结构起源仍知之甚少。本文采用光谱学方法分析了不同氧化铁含量的基础玻璃的硅氧网络结构。着眼于铁原子的微环境，分离出的铁以Fe ₂ O _3的形式转变为团簇。内容增加。基于上述发现，提出了两种影响玻璃稳定性和结晶势的含铁簇结构。通过透射电子显微镜清楚地观察到液-液相分离。热分析证明，团簇形成的增加削弱了玻璃的稳定性。这项研究不仅为理解CaO-MgO-Al ₂ O ₃ -SiO ₂ - Fe ₂ O ₃玻璃的特殊微观结构提供了数据，而且对玻璃陶瓷的亚稳性也有深刻的见解。