Thermal Spray Copper Alloy Coatings as Potent Biocidal and Virucidal Surfaces

Mostaghimi, J.; Pershin, Larry; Salimijazi, Hamidreza; Nejad, Mojgan; Ringuette, Maurice J.

doi:10.1007/s11666-021-01161-7

Cited by 26 publications

(13 citation statements)

References 50 publications

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“…Strong killing effect has been attributed to copper ion attack, characteristic rough surfaces, pores and internal stresses. Similarly, twin wire arc type thermal sprayed CuNiZn based copper alloy coatings in hospitals in Canada and Peru were evaluated under real hospital settings (Mostaghimi et al 2021 ). The coatings were applied on chair arms, cabinet handles, charting tables and push plates/handles for doors.…”

Section: Copper Based Materials In Fighting Covid-19 Virusmentioning

confidence: 99%

Antiviral properties of copper and its alloys to inactivate covid-19 virus: a review

et al. 2021

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Copper (Cu) and its alloys are prospective materials in fighting covid-19 virus and several microbial pandemics, due to its excellent antiviral as well as antimicrobial properties. Even though many studies have proved that copper and its alloys exhibit antiviral properties, this research arena requires further research attention. Several studies conducted on copper and its alloys have proven that copper-based alloys possess excellent potential in controlling the spread of infectious diseases. Moreover, recent studies indicate that these alloys can effectively inactivate the covid-19 virus. In view of this, the present article reviews the importance of copper and its alloys in reducing the spread and infection of covid-19, which is a global pandemic. The electronic databases such as ScienceDirect, Web of Science and PubMed were searched for identifying relevant studies in the present review article. The review starts with a brief description on the history of copper usage in medicine followed by the effect of copper content in human body and antiviral mechanisms of copper against covid-19. The subsequent sections describe the distinctive copper based material systems such as alloys, nanomaterials and coating technologies in combating the spread of covid-19. Overall, copper based materials can be propitiously used as part of preventive and therapeutic strategies in the fight against covid-19 virus.

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Section: Copper Based Materials In Fighting Covid-19 Virusmentioning

confidence: 99%

Antiviral properties of copper and its alloys to inactivate covid-19 virus: a review

et al. 2021

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“…The occurrence of splats is attributed to the sudden cooling of the molten metal droplets that were propelled by the compressed air onto the substrate. In addition, a few smaller molten metal droplets that remained suspended in the air/atmosphere later got deposited as inflight particles [ 32 ]. The presence of inflight particles, splats, and un-melted metal particles cause severe defects on the coating surface.…”

Section: Resultsmentioning

confidence: 99%

Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater

et al. 2021

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Zinc (Zn) coating is being used to protect steel structures from corrosion. There are different processes to deposit the coating onto a steel substrate. Therefore, in the present study, a 100 µm thick Zn coating was deposited by arc and plasma arc thermal spray coating processes, and the corrosion resistance performance was evaluated in artificial seawater. Scanning electron microscopy (SEM) results showed that the arc thermal spray coating exhibited splats and inflight particles, whereas plasma arc spraying showed a uniform and dense morphology. When the exposure periods were extended up to 23 d, the corrosion resistance of the arc as well as the plasma arc thermal spray coating increased considerably. This is attributed to the blocking characteristics of the defects by the stable hydrozincite (Zn5(OH)6(CO3)2).

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“…Product surfaces containing copper are considered to be a non-toxic, cost-effective, and environmentally friendly method of preventing the spread of pathogens. The US Environmental Protection Agency (EPA) confirmed an average of 99% antimicrobial efficacy within 2 h for over 500 alloys containing ≥60% Cu [ 24 ]. In laboratory tests, biocidal efficacy has been demonstrated against pathogenic microorganisms such as the bacteria S. aureus , E. coli , and Acinetobacter baumani and the fungi C. albicans , P. aeruginosa , and Kliebsiella pneumoniae [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Bactericidal and Fungistatic Properties of LDPE Modified with a Biocide Containing Metal Nanoparticles

et al. 2021

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The aim of this study was to ascertain whether the combined action of metal nanoparticles (silver, copper, zinc oxide, iron oxide) would ensure the appropriate biocidal properties oflow-density polyethylene (LDPE) against pathogenic microorganisms. According to the research hypothesis, appropriately selected concentrations of the applied metal nanoparticles allow for a high level of biocidal activity of polymeric materials against both model and pathogenic bacterial strains (Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Legionella pneumophila, Salmonella enterica subsp. enterica) and fungi (Aspergillus brasiliensis, Saccharomyces cerevisiae, Candida albicans, Penicilium expansum), whilst ensuring the safety of use due to the lack of migration of particles to the surrounding environment. Studies have shown that adding 4% of a biocide containing Ag, Cu, ZnO, and Fe2O3 nanoparticles is the most optimal solution to reduce the number of S. aureus, S. enterica,and P. aeruginosa by over 99%. The lowest effectiveness was observed against L. pneumophila bacteria. As for E. coli, a higher biocide content did not significantly increase the antibacterial activity. The results showed a high efficiency of the applied biocide at a concentration of 2% against fungal strains. The high efficiency of the obtained biocidal results was influenced by the uniform dispersion of nanoparticles in the material and their low degree of agglomeration. Furthermore, a slight migration of components to the environment is the basis for further research in the field of the application of the developed materials in industry.

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Thermal Spray Copper Alloy Coatings as Potent Biocidal and Virucidal Surfaces

Cited by 26 publications

References 50 publications

Antiviral properties of copper and its alloys to inactivate covid-19 virus: a review

Antiviral properties of copper and its alloys to inactivate covid-19 virus: a review

Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater

Bactericidal and Fungistatic Properties of LDPE Modified with a Biocide Containing Metal Nanoparticles

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