Effect of liquid crystal polymer micro-bump structure prepared by mesh method on the frictional corrosion performance of micro-arc oxide coated pure aluminum disks

In this study, micro-arc oxidation (MAO) technology was used to coat the surface of pure aluminum disks. Then the liquid crystal polymer (LCP) was used in the mesh method to form a micro-bump structure on the MAO coating. Compared with a single MAO coating, the micro-bump composite coating has a low coefficient of friction, high corrosion resistance, and excellent resistance to frictional corrosion. The microstructure and composition of both coatings were characterized by metallurgical microscopy, SEM, EDS, XRD, and XPS. And the protection mechanism, as well as the physical model of the LCP micro-bump coating, are presented and dis-cussed. In summary, the preparation of micro-bump structures on MAO surfaces using the mesh method provides a feasible improvement idea for the shortcomings of MAO technology.

Automated summary

In this study, micro-arc oxidation (MAO) technology was used to coat the surface of pure aluminum disks, and then liquid crystal polymer (LCP) was utilized in the mesh method to form a micro-bump structure on the MAO coating. The micro-bump composite coating showed lower friction coefficient, higher corrosion resistance, and excellent resistance to frictional corrosion compared to the single MAO coating. The microstructure and composition of both coatings were analyzed using various characterization techniques, and the protection mechanism and physical model of the LCP micro-bump coating were proposed and discussed. In summary, the preparation of micro-bump structures on MAO surfaces using the mesh method provides a feasible improvement idea for the shortcomings of MAO technology.