Corrosion Tests of Oxide-Ceramic Coatings Formed by Microarc Oxidation

Effect of Temperature and Thermal Stress on Micropores and Cracks in Aluminum Alloy Film During Micro-Arc Oxidation

“…[17][18][19][20][21] The ceramic layer has the characteristics of high hardness, strong bonding force with matrix, corrosion resistance, high-temperature oxidation resistance, good insulation, and so on, which is especially suitable for light metal alloy parts that move at high speed and need high wear resistance, corrosion resistance, and high-temperature impact resistance. [22][23][24][25][26][27] However, in the process of micro-arc oxidation, there are often micro-pores, cracks, and other defects, which have adverse effects on the corrosion resistance and wear resistance of micro-arc oxidation film. At present, most of the defects in the process of micro-arc oxidation are investigated by experiments, which will consume a lot of experimental resources and fail to explore the causes of the formation of micropores and cracks from a microscopic perspective.…”