Research on the Anodic Oxidation Process of 3d Printing Alsi10mg Alloy Surface

Abstract

AlSi10Mg is one of the most commonly used materials in 3D printing of aluminum alloys. The addition of alloying element Si can significantly improve the formability and mechanical strength of aluminum alloys. However, due to the higher electrode potential of Si compared with Al, the corrosion resistance of Al matrix is greatly reduced, resulting in serious corrosion failure. Anodic oxidation is an effective method for surface modification of aluminum alloy, but the research on the anodic oxidation behavior of 3D printed AlSi10Mg alloy is rarely reported. To solve this problem, the anodic oxidation behavior of 3D printing AlSi10Mg alloy was systematically studied in this paper, focusing on the mechanism of the effect of oxidation voltage on the film structure characteristics, corrosion resistance and wear resistance. The study proved that the thickness and the density of oxide film layers increased and the surface roughness decreased at low voltage, due to Si found that with the increase of voltage. At the same time, the hardness, corrosion and wear resistance of the film layers also increased with the increase of voltage.

Keywords: Anodic oxidation, AlSi10Mg, Electrochemistry, Corrosion resistance, wear resistance, 3d printing