Used as a high-performance ceramic in dental and medical implants due to its strength, biocompatibility, and resistance to wear. Commonly applied in oxygen sensors and fuel cell membranes because of its ability to conduct oxygen ions at high temperatures. Employed in coatings for cutting tools to enhance hardness and heat resistance. Utilized in sunscreen and cosmetics as a white pigment and UV blocker, offering safe and effective protection. Also serves as a catalyst or catalyst support in chemical reactions, especially in petroleum refining and emission control systems.