Forming Ceramic Coating on Al2024 by Scanning Micro-Arc Oxidation
Micro-arc oxidation (MAO) is a novel technique to deposit ceramic coatings on the surface of valve metals such as Al, Mg, Ti and their alloys. The oxide films prepared by this technique have a dense structure, high adhesion and excellent integrated mechanical properties. This technique is especially suitable for the surface treatment of machine parts that work at high speed and have a higher demand for resistance to wear and corrosion. There have been many studies in this field in the last few years. The development of micro-arc oxidation and its applications in industrial field was reviewed. Based on conventional micro-arc oxidation, an innovative scanning micro-arc oxidation technology with visible advantages was developed in this paper. Moreover, verification experiment on scanning micro-arc oxidation was carried out, and the experimental results suggested that scanning micro-arc oxidation could be conduced at a high efficiency but low cost way. At last, the effects of scanning times on film thickness were discussed.
Bo Zhao, Yidu Zhang, Guanglin Wang, Hai Zhang, Jianbin Zhang and Feng Jiao
P. X. Lv et al., "Forming Ceramic Coating on Al2024 by Scanning Micro-Arc Oxidation", Applied Mechanics and Materials, Vol. 42, pp. 485-488, 2011