How is anodizing completed?

 　　Anodized aluminum oxide is considered as an electrochemical process. It involves immersing aluminum alloy into a tank containing electrolyte. The solution contains acid; The type of acid depends on the application. Once submerged, the current will flow through the aluminum. Anodized aluminum is used as an anode. The cathode is also placed in the water tank; Usually aluminum or lead. Current causes aluminum oxidation. The aluminum oxide layer left by the anodic oxidation process is thicker than what can be achieved through natural oxidation.