Study on the Formation Mechanism of Micro-Arc Oxidation Layer in Aviation

Abstract

Since the inception of micro-arc oxidation technique, the research on the mechanism of micro-arc oxidation has never stopped. During this period, the research on micro-arc oxidation process of breakdown phenomenon is in depth, and the breakdown model also has been established. Because the micro-arc oxidation process involves many complicated phenomena such as heat, light, electricity, there are a lot of difficulties to deal with. Therefore it has not the perfect qualitative and quantitative model to explain all the phenomena. This paper reviewed the research progress of the mechanism of micro-arc oxidation, observed and analyzed the phenomena and the possible reactions of micro-arc oxidation process at all stages. This paper also discussed plasma’s important role in the process of micro-arc oxidation.Since the inception of micro-arc oxidation technique, the research on the mechanism of micro-arc oxidation has never stopped. During this period, the research on micro-arc oxidation process of breakdown phenomenon is in depth, and the breakdown model also has been established. Because the micro-arc oxidation process involves many complicated phenomena such as heat, light, electricity, there are a lot of difficulties to deal with. Therefore it has not the perfect qualitative and quantitative model to explain all the phenomena. This paper reviewed the research progress of the mechanism of micro-arc oxidation, observed and analyzed the phenomena and the possible reactions of micro-arc oxidation process at all stages. This paper also discussed plasma’s important role in the process of micro-arc oxidation.

Study on corrosion resistance of TC4 titanium alloy micro‐arc oxidation/(PTFE + graphite) composite coating

“…The commonly used surface treatment methods include electroplating, physical vapor deposition, anodic oxidation, diamond-like carbon film, magnetron sputtering, laser surface treatment, and thermal oxidation. [13][14][15][16][17][18] Micro-arc oxidation (MAO) is an electrochemical surface modification technology developed based on anodic oxidation, [19][20] and its process and equipment are simple and environmentally friendly. It is through the combination of electrolyte and corresponding electrical parameters that high temperature and high-pressure arc discharge occur on the surface of metals, forming a durable, thick, uniform, and tightly bonded coating on the surface of the substrate.…”