Used as an abrasive in sandpapers and grinding wheels due to its hardness. Commonly found in cutting tools and polishing compounds. Serves as a catalyst support in chemical reactions, including in the petrochemical industry. Applied as a protective coating on surfaces to resist wear and corrosion. Used in electronics as an electrical insulator in microchips and circuit boards. Found in biomedical applications such as in implants and prosthetics for its biocompatibility and durability. Used as an additive in ceramics to enhance durability and melting point. Primary raw material in aluminum production via electrolysis (Hall-Héroult process). Also used in filtration systems to remove moisture and impurities from gases.