Anodized aluminum is aluminum that has undergone an electrochemical process to create a protective oxide layer on its surface. This layer enhances the metal's resistance to corrosion and wear, making it more durable and suitable for various applications, including aerospace, automotive, and consumer electronics. The anodizing process also allows for the addition of color, as the porous oxide layer can absorb dyes. This feature not only improves aesthetics but also helps to maintain the aluminum's appearance over time. Anodized aluminum is commonly used in products like kitchenware, furniture, and building materials.