Antibacterial properties and corrosion resistance of AISI 420 stainless steels implanted by silver and copper ions

作者：Ni, Hong-wei^*; Zhang, Han-shuang; Chen, Rong-sheng; Zhan, Wei-ting; Huo, Kai-fu; Zuo, Zhen-yu

来源：International Journal of Minerals,Metallurgy and Materials, 2012, 19(4): 322-327.

DOI：10.1007/s12613-012-0558-6

• ion implantation
• antibacterial properties
• stainless steel
• Escherichia coli
• Staphylococcus aureus
• corrosion resistance

Silver or copper ions are often chosen as antibacterial agents. But a few reports are concerned with these two antibacterial agents for preparation of antibacterial stainless steel (SS). The antibacterial properties and corrosion resistance of AISI 420 stainless steel implanted by silver and copper ions were investigated. Due to the cooperative antibacterial effect of silver and copper ions, the Ag/Cu implanted SS showed excellent antibacterial activities against both Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) at a total implantation dose of 2x10(17) ions/cm(2). Electrochemical polarization curves revealed that the corrosion resistance of Ag/Cu implanted SS was slightly enhanced as compared with that of un-implanted SS. The implanted layer was characterized by X-ray photoelectron spectroscopy (XPS). Core level XPS spectra indicate that the implanted silver and copper ions exist in metallic state in the implanted layer.

• 出版日期2012-4
• 单位武汉科技大学