Micro-arc oxidation process characteristics:

Micro-arc oxidation is a development from anodizing, but it possesses 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 temperature range of the solution can be quite broad. The process of micro-arc oxidation is simpler and more versatile, suitable for 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 ceramic film formed is far superior in terms of functionality and performance compared to anodized films. Depending on the composition of the workpiece material, the working fluid, pulse waveform, and process parameters, the ceramic layer on the surface after micro-arc oxidation offers a variety of functionalities and different application scopes, generally as follows:

1. High hardness, high density

The ceramic layer produced by micro-arc oxidation has a hardness and wear resistance that can exceed淬火钢、hardened alloy, thus making it suitable for aerospace or aviation applications, or for products requiring light weight. Aluminum alloys 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 formed by surface micro-arc oxidation can be utilized.

2. Abrasion-resistant surface

Due to the micro-arc oxidation process, a ceramic layer with micropores forms on the material surface, reducing the friction coefficient 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 car and motorcycle pistons, or any scenario requiring a low friction coefficient.

Due to the ceramic coating on the surface, aluminum alloys can withstand high temperatures of up to 800-900°C, even 2000°C in a short period, thereby increasing the operating temperature of aluminum, magnesium, titanium, and other alloy components. They are suitable for rocket, cannon, and other parts requiring immediate use.

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, suitable for solar heat collectors or heat sinks for electronic components. Aluminum, magnesium, titanium, and their alloys can be used to produce colored ceramic surfaces, which can serve as high-end decorative materials for mobile phone casings and similar applications.