Corrosion Behavior of 7075-T6 Aluminum Alloy in the Presence of Aspergillus Niger

摘要

Aspergillus niger is a fungus that can promote the corrosion of aluminum alloys. In this paper, the corrosion behavior of 7075-T6 aluminum alloy in the presence of Aspergillus niger was investigated with the corrosion weight-loss method, electrochemical tests, scanning electron microscopy (SEM), and inductively coupled plasma optical emission spectrometry (ICP-OES). The results showed that Aspergillus niger greatly promoted the corrosion behavior of 7075-T6 aluminum alloy, and the corrosion rate was 6-12 times that of the sterile system. The electrochemical results showed that the corrosion process of the aluminum alloy was promoted by Aspergillus niger, and a large number of corrosion pits appeared on the surface with increasing exposure time. The research results confirmed that Aspergillus niger can significantly promote the corrosion of aluminum alloys.