Bias effects on wear and corrosion behavior of amorphous hydrogenated carbon films with zirconia interlayer

Esquivel-Puentes, Helber Antonio; Fisher, Timothy S.; Capote, Gil; Olaya, Jhon J

doi:10.1016/j.surfcoat.2018.07.054

Cited by 7 publications

(4 citation statements)

References 51 publications

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“…The coating was prepared by Technometals in Dayton, OH. Hydrogenated carbon and diamond-like carbon can be obtained using multiple techniques like chemical vapor deposition (CVD) or physical vapor deposition (PVD) 30 . For this study, the PVD technique was used 31 .…”

Section: Methodsmentioning

confidence: 99%

Novel sustainable filter for virus filtration and inactivation

Purwar

Esquivel-Puentes

Pulletikurthi

et al. 2022

Sci Rep

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The COVID-19 pandemic has caused a multi-scale impact on the world population that started from a nano-scale respiratory virus and led to the shutdown of macro-scale economies. Direct transmission of SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) and its variants through aerosolized droplets is a major contributor towards increasing cases of this infection. To curb the spread, one of the best engineered solutions is the use of face masks to prevent the passage of infectious saliva micro-droplets from an infected person to a healthy person. The commercially available masks are single use, passive face-piece filters. These become difficult to breathe in during strenuous activities. Also, they need to be disposed regularly due to accumulation of unwanted particulate and pathogens over time. Frequent disposal of these masks is unsustainable for the environment. In this study, we have proposed a novel design for a filter for enhanced virus filtration, better breathability, and virus inactivation over time. The filter is called Hy–Cu named after its (Hy) drophobic properties and another significant layer comprises of copper (Cu). The breathability (pressure drop across filter) of Hy–Cu is tested and compared with widely used surgical masks and KN95 masks, both experimentally and numerically. The results show that the Hy–Cu filter offers at least 10% less air resistance as compared to commercially available masks. The experimental results on virus filtration and inactivation tests using MS2 bacteriophage (a similar protein structure as SARS-CoV-2) show that the novel filter has 90% filtering efficiency and 99% virus inactivation over a period of 2 h. This makes the Hy–Cu filter reusable and a judicious substitute to the single use masks.

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Section: Methodsmentioning

confidence: 99%

Novel sustainable filter for virus filtration and inactivation

Purwar

Esquivel-Puentes

Pulletikurthi

et al. 2022

Sci Rep

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“…Furthermore, it was reported that the formation of a galvanic couple between the films and the substrate also has an important effect on the corrosion properties of film/substrate system [7,20,53], inducing and accelerating pitting corrosion. For GLC-3, the high electrical conductivity of GLC films provides channels for electron transport, while surface defects provide ion channels for the electrolyte.…”

Section: Corrosion and Damage Mechanism Of Glc Filmsmentioning

confidence: 99%

“…The corrosion medium can destroy the interface between the film and the substrate through the pores and defects in the film, leading to catastrophic failure of the components. One common strategy is to add an interlayer between the film and substrate, which can mitigate the performance difference between the film and the substrate, and extend the diffusion path of corrosive media, leading to improvement of the corrosion and wear resistance of the films [10,[20][21][22]. Although different interlayers can make different positive contributions to the performance of GLC films, the gradient interlayer was reported as the optimal solution since the gradient distribution of the Me/C (Me refers to metallic elements such as Cr [10], Ti [23], Al [24] or W [25]) composition eliminates the abrupt chemical or mechanical changes in the film/substrate interface.…”

Section: Introductionmentioning

confidence: 99%

Influence of gradient interlayer thickness on corrosion and tribological behavior of Ti-containing multilayer graphite-like carbon films

Shi

Chen

et al. 2022

Wear

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“…Carcione et al [10] grew Ti-doped diamond film on Ti substrates via hot filament CVD (HFCVD) at 750 °C to investigate osteoblast-like cell growth. In a separate study, Esquivel-Puentes et al [11] achieved adhesion of hydrogenated amorphous carbon (a-C:H) films on titanium alloys (Ti6Al4V) via microwave plasma CVD (MPCVD) by inserting a zirconia-doped with silicon interlayer via R.F. sputtering prior to (a-C:H) film deposition to study bias effects on wear and corrosion behavior.…”

Section: Introductionmentioning

confidence: 99%

Influence of different pretreatments on the adhesion of nanodiamond composite films on Ti substrates via coaxial arc plasma deposition

Osman

Ali

Zkria

et al. 2023

Mater. Res. Express

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In this study, we report on the novel growth of nanodiamond composite (NDC) films on Ti substrates using the coaxial arc plasma deposition (CAPD) at room temperature, which offers several advantages over conventional growth techniques. CAPD employs a unique coaxial arc plasma gun structure that provides a supersaturated condition of highly energetic C+ ions for ultrafast quenching on the substrate, promoting the growth of nanodiamond grains. This allows for NDC films’ growth on diverse substrates without the need for initial seeding or substrate heating. However, the growth of NDC films on Ti substrates at room temperature is challenging due to the native oxide layer (TiO2). Here, we grew NDC films on Ti substrates using three different pretreatments: (i) hydrofluoric acid (HF) etching, (ii) insertion of a titanium carbide (TiC) intermediate layer, and (iii) in-situ Ar+ plasma etching. The morphology and structure of the grown NDC films were examined by 3D laser, high-resolution scanning electron microscopies (HR-SEM), Raman, and X-ray photoelectron (XPS) spectroscopies. Our results demonstrate that in-situ Ar+ plasma etching is the most effective pretreatment method for completely removing the native TiO2 layer compared to the other two ex-situ pretreatments, in which re-oxidation is more likely to occur after these pretreatments. Furthermore, NDC films grown using the hybrid Ar+ ion etching gun (IG) and CAPD exhibit the highest sp3 content (63%) and adhesion strength (16 N).

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Bias effects on wear and corrosion behavior of amorphous hydrogenated carbon films with zirconia interlayer

Cited by 7 publications

References 51 publications

Novel sustainable filter for virus filtration and inactivation

Novel sustainable filter for virus filtration and inactivation

Influence of gradient interlayer thickness on corrosion and tribological behavior of Ti-containing multilayer graphite-like carbon films

Influence of different pretreatments on the adhesion of nanodiamond composite films on Ti substrates via coaxial arc plasma deposition

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