Progress in Research and Application of Mica Glass-ceramics

Mica glass-ceramics is a composite material composed of lamellar or needle-shaped mica crystals and a glass phase.It originates from the K₂O-MgO-MgF₂-Al₂O₃-SiO₂ system, which has been developed by incorporating various additives. This process makes the mica crystal as the main crystal phase, forming glass-ceramics with special lamellar structure. The progress in composition system, preparation method, properties and applications of mica glass-ceramics are systematically introduced.Special attention is paid to their unique machinable properties. Their lamellar structure gives it excellent machinable characteristics, enabling it to be made into components with precise size, precise fit and complex shape by using various processing means. Mica glass-ceramics exhibit applications in the fields of biological tissue, high-precision structural parts, vacuum electronic devices, etc. Finally, the development trend of mica glass-ceramics is prospected.