Abstract
The bactericidal and corrosive property of Ag +-implanted AISI317 stainless steel and TiN thin films coated on AISI317 substrate were investigated using Gram positive bacteria Staphylococcus aureus ( S. aureus) and electrochemical measurements. The silver ion implantation was performed with the dose ranging from 5 × 10 16 to 5 × 10 18 ions/cm 2 at an energy of 70 keV. The samples were characterized by X-ray Photoelectron Spectroscopy (XPS). The results indicate that the high dose Ag +-implanted samples show the antibacterial activity obviously but high dose implantation reduced the corrosion resistance correspondingly. There is an optimum ion dose of 1 × 10 18 ions/cm 2 at which both bactericidal and anticorrosion properties are kept complement. Based on some results on surface characterization, the mechanism of the antibacterial properties and corrosion resistance are discussed.
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