Copper Surface Treatment Method with Antibacterial Performance Using "Super-Spread Wetting" Properties

In this work, a copper coating is developed on a carbon steel substrate by exploiting the superwetting properties of liquid copper. We characterize the surface morphology, chemical composition, roughness, wettability, ability to release a copper ion from surfaces, and antibacterial efficacy (against...

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Bibliographic Details
Published inMaterials Vol. 15; no. 1; p. 392
Main Authors Seo, Beomdeok, Kanematsu, Hideyuki, Nakamoto, Masashi, Miyabayashi, Yoshitsugu, Tanaka, Toshihiro
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 05.01.2022
MDPI
Subjects
antibacterial properties
Bacteria
Carbon steel
Carbon steels
Chemical composition
Coating
Contact angle
Copper
E coli
Emission analysis
fine crevice structure
Inductively coupled plasma
Investigations
Lasers
Microscopy
Morphology
Polymer films
Substrates
super-spread wetting properties
Surface roughness
Surface structure
Surface treatment
Wettability
Wetting
Japan
antibacterial properties
copper
super-spread wetting properties
coating
fine crevice structure
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Summary:In this work, a copper coating is developed on a carbon steel substrate by exploiting the superwetting properties of liquid copper. We characterize the surface morphology, chemical composition, roughness, wettability, ability to release a copper ion from surfaces, and antibacterial efficacy (against and ). The coating shows a dense microstructure and good adhesion, with thicknesses of approximately 20-40 µm. X-ray diffraction (XRD) analysis reveals that the coated surface structure is composed of Cu, Cu O, and CuO. The surface roughness and contact angle measurements suggest that the copper coating is rougher and more hydrophobic than the substrate. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) measurements reveal a dissolution of copper ions in chloride-containing environments. The antibacterial test shows that the copper coating achieves a 99.99% reduction of and . This study suggests that the characteristics of the copper-coated surface, including the chemical composition, high surface roughness, good wettability, and ability for copper ion release, may result in surfaces with antibacterial properties.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma15010392