Process characteristics of micro-arc oxidation:

Micro-arc oxidation evolved from anodizing but offers many advantages not found in traditional anodizing. The micro-arc oxidation equipment is simpler, the electrolyte is mostly alkaline, and it has minimal environmental impact. The solution temperature can vary over a wide range. The process of micro-arc oxidation is straightforward and applicable to a wide range of materials.

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 also boasts more functions and superior performance compared to anodized coatings. Depending on the composition of the workpiece material, working fluid, pulse waveform, and process parameters, the ceramic layer formed after micro-arc oxidation offers a variety of functions and different application ranges, generally as follows:

1. High hardness, high strength

Ceramic thin layers formed by micro-arc oxidation have hardness and wear resistance that can exceed淬火钢、hard alloys. Therefore, in aerospace, aviation, or applications requiring lightweight products, aluminum alloys can be used to manufacture valve sleeves, cores, and cylinders for pneumatic and hydraulic servo valves. The ceramic layer generated by surface micro-arc oxidation can be applied to the surface of aluminum alloy spindle components in high-speed motion.

2. Abrasion-resistant surface

Due to the micro-arc oxidation process, a ceramic layer with micropores forms on the material surface, reducing the coefficient of friction to between 0.06 and 0.12 when using traditional lubricants. Filling the micropores with solid lubricant further enhances the friction and wear reduction, making it suitable for applications such as car and motorcycle pistons, or any situation requiring a low coefficient of friction.

Due to the ceramic coating on the surface, aluminum alloys can withstand high temperatures of 800 to 900°C, even up to 2000°C in a short period, thereby enhancing the working temperature 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 can be used as heat sinks for solar heat collectors or electronic components. Aluminum, magnesium, titanium, and their alloys can be made into colorful ceramic surfaces, suitable as high-end decorative materials for phone shells, etc.