1️⃣ Cleaning
- Alkaline/Acid Cleaning: Removes oils, dirt, and oxidation to ensure proper adhesion.
2️⃣ Etching (Optional)
- Acid Etching: Sodium hydroxide or other acids create a matte or textured surface.
3️⃣ Anodizing
- Aluminum is submerged in a sulfuric acid bath and acts as an anode.
- An electric current generates oxygen ions, forming a durable aluminum oxide layer.
- Thickness varies with time and current, providing greater protection and corrosion resistance.
