Antibacterial Surface Treatment of Aluminum Materials

摘要

Aluminum specimens were anodized in a sulfuric acid bath, then silver was electrodeposited in poresof the anodized aluminum by using alternating current . The anodized aluminum with deposited silver was testedfor its antibacterial performance. The results show that the antibacterial rates of the specimens are above 95%against the growth of E. coli, P. aeruginasa, S. faecalis and S. aureus. The morphology of the silver in pores ofanodized aluminum is characterized by transmission electron microscopy, and the micrographs indicate that silveris assembled in the form of nanowires with a diameter of 10 nm or 25 nm. The nanowires have a structure of parallelbright stripes alternating with parallel dark stripes.