What is Anodizing?

Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. Aluminum is ideally suited to anodizing, Yea-Lin mainly provide this anodizing process on Aluminum.

The anodic oxide structure is composed entirely of aluminum oxide on the aluminum substrate. This aluminum oxide is fully integrated with the underlying aluminum substrate, so it cannot chip or peel like painting or electroplating. It has a neatly arranged, porous structure that allows for secondary processes such as coloring and sealing.

Anodizing is accomplished by immersing the aluminum into an acid electrolyte bath and passing an electric current through the medium. A cathode is mounted to the inside of the anodizing tank; the aluminum acts as an anode, so that oxygen ions are released from the electrolyte to combine with the aluminum atoms at the surface of the part being anodized. So anodizing process is a matter of highly controlled oxidation.

Benefits of anodizing include:

• Very thin thickness than paints and powder coating.

• Much harder surface than paint and powders.

• Extremely durable, abrasion resistant and long lasting.

• Inexpensive compared to painting and powder coating.