Na2 Sr2 P6 O18

Na₂Sr₂P₆O₁₈ is an inorganic ceramic compound belonging to the phosphate family, specifically a mixed sodium-strontium polyphosphate. This material is primarily of research interest rather than a widely commercialized engineering ceramic, though phosphate-based ceramics in general are studied for biomedical applications, thermal management, and specialty optical uses. The combination of alkali and alkaline-earth cations in a polyphosphate framework offers potential for tailoring thermal stability, ion conductivity, and chemical durability, making it a candidate for emerging applications where conventional phosphate ceramics may fall short.