TiN-Ag as an antimicrobial and wear resistant coating

Braceras, I.; Brizuela, Marta; Álvarez, Noelia; Geeteruyen, Miguel Martínez Van; Azkona, I.

doi:10.1016/j.biotri.2021.100192

Cited by 6 publications

(3 citation statements)

References 33 publications

(50 reference statements)

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“…Increasing Ag content also provided a reduction in the coefficient of friction but this was accompanied by reductions in hardness for all the coatings and wear resistance for some of the coatings. More recently (2021), Braceras et al [64], also investigated Ag-TiN as an antimicrobial and wear-resistant coating in the range 4-66 at.% Ag. They showed some excellent results for antimicrobial activity but again this was counteracted by a gradual decrease in hardness with increasing Ag content in the films.…”

Section: Silvermentioning

confidence: 99%

Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces

Birkett

Dover

Lukose

et al. 2022

IJMS

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International interest in metal-based antimicrobial coatings to control the spread of bacteria, fungi, and viruses via high contact human touch surfaces are growing at an exponential rate. This interest recently reached an all-time high with the outbreak of the deadly COVID-19 disease, which has already claimed the lives of more than 5 million people worldwide. This global pandemic has highlighted the major role that antimicrobial coatings can play in controlling the spread of deadly viruses such as SARS-CoV-2 and scientists and engineers are now working harder than ever to develop the next generation of antimicrobial materials. This article begins with a review of three discrete microorganism-killing phenomena of contact-killing surfaces, nanoprotrusions, and superhydrophobic surfaces. The antimicrobial properties of metals such as copper (Cu), silver (Ag), and zinc (Zn) are reviewed along with the effects of combining them with titanium dioxide (TiO2) to create a binary or ternary contact-killing surface coatings. The self-cleaning and bacterial resistance of purely structural superhydrophobic surfaces and the potential of physical surface nanoprotrusions to damage microbial cells are then considered. The article then gives a detailed discussion on recent advances in attempting to combine these individual phenomena to create super-antimicrobial metal-based coatings with binary or ternary killing potential against a broad range of microorganisms, including SARS-CoV-2, for high-touch surface applications such as hand rails, door plates, and water fittings on public transport and in healthcare, care home and leisure settings as well as personal protective equipment commonly used in hospitals and in the current COVID-19 pandemic.

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Section: Silvermentioning

confidence: 99%

Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces

Birkett

Dover

Lukose

et al. 2022

IJMS

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“…SEM analyses were performed to assess the surface characteristics and the presence of nanoparticles, possibly of Ag. Different authors [19,30] report that TiN-Ag coatings are composed of Ag clusters segregated at the TiN grain boundaries and are revealed as bright spots in the SEM micrographs. This is confirmed in the present study.…”

Section: Composition Microstructure and Morphology Of Tin-ag Coatingsmentioning

confidence: 99%

“…Studies involving TiN/Ag multilayers deposited on titanium alloys showed the formation of a film with antibacterial properties [19][20][21][22]. In this context, the formation of decorative TiN films with silver becomes interesting and can play an important role in protecting sanitary metals from the formation of biofilms.…”

Section: Introductionmentioning

confidence: 99%

Ag Behavior on TiN Thin Films for Decorative Coatings

Arruda,

Mansano,

Ordonez

et al. 2024

Coatings

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TiN-Ag ceramic coatings deposited by magnetron sputtering on silicon wafers and AISI F138 stainless-steel substrates with different Ag concentrations were evaluated for their application as decorative coatings. The results obtained indicated an almost linear increase in the thickness and roughness of the film as a function of the increase in the silver content of the film. For Ag concentrations greater than (8.3 ± 0.5) at %, a matte/satin finish was observed, i.e., a dull surface, produced by the agglomeration of particulates and the increase in roughness, respectively, which was corroborated by SEM and AFM analyses. The EDS analyses indicated particles with a high concentration of silver, but the elements titanium and nitrogen were also observed, indicating the formation of the TiN-Ag coating. The L*a*b* parameters in the CIELab color space were evaluated. No major variations were observed for coatings A and B (Ag concentrations of (4.1 ± 0.4) and (6.3 ± 1.2) at %, respectively). When the Ag content increased substantially, there was a corresponding decrease in L* values, as well as a shift in red reflectance. Furthermore, unwanted changes in the visual appearance and resistance to accelerated corrosion (salt spray) were also analyzed, as these factors compromised the film’s aesthetics in decorative applications.

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