Throughout the micro-arc oxidation process, organic chemical air oxidation, photoelectric catalytic air oxidation, and plasma air oxidation coexist, making the formation of the ceramic layer a complex process. To date, there is no scientifically reasonable mold that can describe the generation of the ceramic layer.

The micro-arc oxidation processing technology introduces the electromagnetic induction law of general anodic oxidation from the working area to the high-voltage charging and discharging area, overcoming the drawbacks of hard anodic oxidation, and significantly improving the performance of the film layer. The micro-arc oxidation film layer is strongly integrated with the base material, featuring high density, high ductility, and possesses excellent wear resistance, corrosion resistance, heat shock resistance, and insulation properties. This process is characterized by its simplicity in operation and ease of adjusting the film layer function, and it is not complex, causing no air pollution. It represents a new, green, energy-saving material surface treatment technology with broad application prospects in aerospace, machinery, electronics, and decoration.

Micro-arc oxidation, also known as micro-plasma air oxidation, is a process that utilizes the composition of lithium battery electrolytes and relative electrical parameters to develop a micro-filtration layer dominated by the hydroxides of the base material. This is achieved by applying a transient ultra-high voltage and high-temperature effect through electro-optical charging and discharging on the surface of aluminum, magnesium, titanium, and their alloys. The process primarily involves physical methods, with organic chemical methods being the most common.