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. Applied as a protective coating on surfaces to resist wear and corrosion. Used in the production of aluminum metal. Employed in dental and medical implants for biocompatible surfaces. Found in electronic substrates and insulating components. Utilized in chromatography as a stationary phase. Also used in cosmetics and sunscreens for its reflective and thickening properties.