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

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

doi:10.1007/s12613-012-0558-6

Volume 19 Issue 4

Apr. 2012

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International Journal of Minerals, Metallurgy and Materials > 2012 > 19(4): 322-327. > DOI: 10.1007/s12613-012-0558-6

Hong-wei Ni, Han-shuang Zhang, Rong-sheng Chen, Wei-ting Zhan, Kai-fu Huo, and Zhen-yu Zuo, Antibacterial properties and corrosion resistance of AISI 420 stainless steels implanted by silver and copper ions, Int. J. Miner. Metall. Mater., 19(2012), No. 4, pp.322-327. https://dx.doi.org/10.1007/s12613-012-0558-6

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

Author Affilications

Key Laboratory for Ferrous Metallurgy and Resources Utilization of the Ministry of Education, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

Funds:

This work was financially supported by the National Natural Science Foundation of China (Nos. 50771075 and 51171133) and the Program for New Century Excellent Talents in University of Ministries of the Education of China (No. NECT-07-0650).

Received: 03 April 2011; Revised: 06 May 2011; Accepted: 09 May 2011; Available Online: 14 June 2021

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Abstract

Abstract

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 2×10¹⁷ ions/cm². 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.
- ion implantation,
- antibacterial properties,
- stainless steel,
- Escherichia coli,
- Staphylococcus aureus,
- corrosion resistance

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