What are the best methods to prevent fretting corrosion in aluminum outdoor flower boxes?

Fretting corrosion in aluminum outdoor flower boxes can compromise their durability and appearance over time. To prevent this issue, several effective methods can be employed. First, applying a protective coating, such as powder coating or anodizing, creates a barrier against moisture and oxygen, reducing corrosion risks. Second, using galvanic isolators or dielectric barriers between aluminum and other metals prevents electrochemical reactions. Regular cleaning to remove dirt and debris, along with applying corrosion inhibitors, also helps maintain the metal's integrity. Additionally, ensuring proper drainage in flower boxes prevents water accumulation, a major contributor to corrosion. By combining these strategies, you can significantly extend the lifespan of your aluminum flower boxes while keeping them looking pristine.