Used as a ceramic material in dental and medical implants due to its high strength, biocompatibility, and resistance to wear. Commonly applied in oxygen sensors and fuel cells because of its ability to conduct oxygen ions at high temperatures. Serves as a refractory material in furnaces and kilns owing to its high melting point and thermal stability. Employed as a pigment in paints and coatings for its opacity and brightness. Utilized in abrasives and cutting tools for its hardness and durability. Also found in some types of catalysts and as a coating material to enhance corrosion resistance in extreme environments.