Authors: O Sharifahmadian H R Salimijazi M H Fathi J Mostaghimi L Pershin
Publish Date: 2012/11/14
Volume: 22, Issue: 2-3, Pages: 371-379
Abstract
Antibacterial surfaces such as silver and copper coated areas reduce risk of bacterial growth considerably In this study wire arc spraying has been utilized to produce an antibacterial copper coating with ultrafine microstructure on stainless steel substrate The chemical composition microstructure and surface morphology of copper coatings were characterized with xray diffraction and scanning electron microscope Determination of thickness and adhesion of the coating were investigated The antibacterial property of copper coatings was analyzed by both gram negative Escherichia coli NCTC 10418 and gram positive Staphylococcus aureus NCTC 11047 The antibacterial performance of coatings was compared to that of stainless steel 316 and a micrograin structure of the commercially available copper Results indicated that the assprayed copper coatings have excellent antibacterial behavior compared to stainless steel and micrograin copper which can be attributed to the presence of the ultrafine grain size micropores and crystallographic defects in the microstructureThis article is an invited paper selected from presentations at the 2012 International Thermal Spray Conference and has been expanded from the original presentation It is simultaneously published in Thermal Spray 2012 Proceedings of the International Thermal Spray Conference Air Land Water and the Human Body Thermal Spray Science and Applications Houston Texas USA May 2124 2012 Basil R Marple Arvind Agarwal Laura FilofteiaToma Margaret M Hyland YukChiu Lau ChangJiu Li Rogerio S Lima and André McDonald Ed ASM International Materials Park OH 2012
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