Used as an abrasive in sandpapers and grinding wheels due to its hardness. Commonly employed in cutting tools and polishing compounds. Serves as a catalyst support in chemical reactions. Found in protective coatings for metals to enhance corrosion resistance. Utilized in the production of aluminum metal through electrolysis. Applied in dental fillings and prosthetics as a biocompatible material. Used in microelectronics as an electrical insulator. Employed in chromatography as a stationary phase for separating mixtures. Found in sunscreen and cosmetics for its UV filtering and thickening properties. Used in ceramics and refractory materials due to high thermal stability.