Process characteristics of micro-arc oxidation:

Micro-arc oxidation is developed from anodization but possesses many advantages not found in traditional anodization. The micro-arc oxidation equipment is simpler, the electrolyte is mostly alkaline, and it has a minimal environmental impact. The temperature range for the solution can vary widely. The process of micro-arc oxidation is simpler and more versatile in terms of material applicability.

Properties and characteristics of micro-arc oxidation ceramic film:

Micro-arc oxidation surface treatment technology differs from anodizing surface oxidation technology, and the resulting ceramic coating far outperforms the anodized coating in terms of functionality and performance. Depending on the material composition of the workpiece, the composition of the working fluid, the pulse waveform, and process parameters, the ceramic layer formed after micro-arc oxidation possesses a variety of functionalities and different application scopes, generally as follows:

1. High hardness, high strength

The ceramic layer formed by micro-arc oxidation has a hardness and wear resistance that can exceed quenched steel and hard alloys. Therefore, in aerospace, aviation, or applications requiring lightweight products, aluminum alloy can be used to manufacture valve sleeves, cores, and cylinders for pneumatic and hydraulic servo valves. On the surface of aluminum alloy spindle components in high-speed motion, the ceramic layer generated by surface micro-arc oxidation can be utilized.

2. Reduced Friction Surface

Due to the micro-arc oxidation process, which forms a ceramic layer with micropores on the material surface, the coefficient of friction can be reduced to 0.06~0.12 when using traditional lubricants. Filling solid lubricants in the micropores further enhances the friction and wear reduction, making it suitable for applications such as automotive and motorcycle pistons, or any scenario requiring a low coefficient of friction.

Due to the ceramic coating on its surface, the aluminum alloy can withstand high temperatures of up to 800-900°C, even 2000°C, in a short period, thereby enhancing the operating temperatures of alloy components like aluminum, magnesium, and titanium. Suitable for components requiring immediate use in applications such as rockets and cannons.

3. Light Absorption and Light Reflective Surface

Create ceramic layers in various performance levels and colors, such as black or white, capable of absorbing or reflecting over 80% of light energy. They are suitable for solar heat collectors or heat sinks for electronic components. Aluminum, magnesium, titanium, and their alloys can be used to form colored ceramic surfaces, which can serve as high-end decorative materials for phone casings and similar applications.