Effect of silver on antibacterial properties of stainless steel
Resource
APPLIED SURFACE SCIENCE, 256(11), 3642-3646
Journal
Applied Surface Science
Pages
3642-3646
Date Issued
2010
Date
2010
Author(s)
Liao, Kuo-Hsing
Ou, Keng-Liang
Cheng, Hsin-Chung
Lin, Che-Tong
Peng, Pei-Wen
Abstract
The microstructural variation and antibacterial properties of the AISI 304 stainless steel containing silver (Ag) element have been investigated by means of optical microscopy (OM), grazing incidence X-ray diffractometry (GIXRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometer (EDS). Furthermore, the antibacterial testing was performed according to JIS Z2801:2000 specification. As the alloy contained Ag elements, the microstructure of the alloys was a mixture of (α + γ + Ag-rich compound)-phases. The amounts of α phase and Ag-rich compound increased as Ag contents increased. The Ag-rich compound has FCC structure with the lattice parameter a = 0.251 nm. No precipitates were found within the matrix and grain boundaries in the present alloys after SHT. Moreover, when the alloy is added to Ag element, antibacterial property was seen obvious against E. coli. It has an AR nearly of 100%. © 2010 Elsevier B.V. All rights reserved.
Type
journal article
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