BaF

Barium fluoride (BaF₂) is an ionic ceramic compound belonging to the halide ceramic family, characterized by its crystalline structure and moderate mechanical stiffness. It is primarily used in optical and infrared applications where transparency to infrared radiation is critical, as well as in specialized high-temperature and corrosive environments where its chemical stability provides advantages over traditional oxides. Engineers select BaF₂ when transparency, thermal stability, and resistance to hydrofluoric acid or other aggressive fluoride-containing media are required, though its hygroscopic nature and cost relative to alternative ceramics must be considered.