Tribological and corrosive investigations of perfluoro and alkylphosphonic self-assembled monolayers on Ti incorporated carbon coatings

Cichomski, M.; Burnat, Barbara; Prowizor, Milena; Jędrzejczak, Anna; Batory, D.; Piwoński, Ireneusz; Kozlowski, W.; Szymański, W.; Dudek, Mariusz

doi:10.1016/j.triboint.2018.10.010

Cited by 16 publications

(11 citation statements)

References 35 publications

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“…Figure 3 shows the coefficient of friction measured using a microtribometer for all studied surfaces. The highest value of the advancing contact angle was obtained for the coating with the lowest content of titanium and with self-assembled monolayers adsorbed on the Ti-DLC, which caused a decrease in the coefficient of friction compared to the unmodified coatings—previously observed in macroscale [28]. In our study, the coefficient of friction obtained in the milinewton load range for pure Ti-DLC was the lowest for Ti-DLC with 1.6 at.% of Ti.…”

Section: Resultssupporting

confidence: 41%

“…Controlling a content of precursors in work atmosphere pure DLC and three Ti-DLC structures with different contents of titanium (1.6 at.%—Ti-DLC1, 5.3 at.%—Ti-DLC2 and 9.4 at.%—Ti-DLC3) were deposited. The details of the deposition process can be found elsewhere [28]. The thickness was controlled by choosing an appropriate duration of the deposition process.…”

Section: Methodsmentioning

confidence: 99%

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Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

et al. 2019

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The diamond-like carbon (DLC) coatings containing 1.6%, 5.3% and 9.4 at.% of Ti deposited by the radio frequency plasma enhanced chemical vapor deposition (RF PECVD) method on the silicon substrate were modified by n-decylphosphonic acid (DP) and 1H, 1H, 2H and 2H-perfluorodecylphosphonic acid (PFDP). The presence of perfluoro and alkylphosphonic self-assembled monolayers prepared by the liquid phase deposition (LPD) technique was confirmed by Fourier transform infrared spectroscopy (FTIR). It was shown that DP and PFDP monolayers on the surface of titanium incorporated diamond-like carbon (Ti-DLC) coatings had a huge influence on their wettability, friction properties, stability under phosphate- and tris-buffered saline solutions and on antimicrobial activity. It was also found that the dispersive component of surface free energy (SFE) had a significant influence on the value of the friction coefficient and the percentage value of the growth inhibition of bacteria. The dispersive component of SFE caused a reduction in the growth of bacteria and the friction coefficient in mili- and nano-newton load range. Additionally, both self-assembled monolayers prepared on Ti-DLC coatings strongly reduced bacterial activity by up to 95% compared to the control sample.

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Section: Resultssupporting

confidence: 41%

Section: Methodsmentioning

confidence: 99%

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

et al. 2019

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“…PECVD has also been employed as a method to enhance the resistance of biomaterials to degradation [89]. It has been demonstrated that PECVD of biocompatible diamond-like carbon (DLC) on metal surfaces reduces corrosion, making such coatings suitable for metal implants [90,91]. Because of the often poor adhesion of DLC coatings on metals, Figueroa et al [92] presented the use of polymerized organosilane films deposited by PECVD from a hexamethyldisilane (HMDS) precursor as a promising alternative.…”

Section: Pecvdmentioning

confidence: 99%

Applications of soft biomaterials based on organic and hybrid thin films deposited from the vapor phase

Marcelja,

Demelius,

Ali

et al. 2023

J. Phys. Mater.

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Soft biomaterials are a crucial component in several application fields. They are used, for example, in biomedical implants, biosensors, drug delivery systems as well as in tissue engineering. In parallel to extensive ongoing efforts to synthesize new materials, the development of means to tailor the materials’ surface properties and thus their interaction with the environment is an important field of research. This has led to the emergence of several surface modification techniques that enable the exploitation of the modified materials in a broader range of technologies. In particular, the use of functional thin films can enable a plethora of biomedical applications, that benefit from the bulk properties of the substrate (e.g., flexibility, lightweight, structural strength) combined to the surface properties of the thin film (e.g, enhancing/prevention cell proliferation, controlled drug release). In addition, for some biomedical applications, the thin films can be the main functional components, e.g. in biosensors. The present review focuses on recent developments in the applications of soft biomaterials based on thin films deposited from the vapor phase. In the field of soft biomaterials, the possibility of depositing from the vapor phase - without the need for any solvents - offers the unprecedent benefit that no toxic leachables are included in the biomaterial. Further, due to the complete lack of solvents, and chemicals overall being used in small quantities only, depositing thin films from the vapor phase can be a more sustainable choice than other techniques that are commonly used.

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“…The self-assembled monolayers were produced on the Si-DLC surface by the liquid phase deposition method. The DP and PFDP solutions at concentration of 0.5% (wt%) were prepared by dissolving the compounds in ethanol at room temperature under ambient conditions [25,31]. The Si-DLC coatings were immersed in DP and PFDP solutions for 60 min.…”

Section: Materials and Samples Preparationmentioning

confidence: 99%

The influence of self-assembled monolayers on tribological properties of Si-DLC coatings

Cichomski

Kisielewska

Prowizor

et al. 2019

Surf. Topogr.: Metrol. Prop.

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The tribological properties of diamond like carbon (DLC) and silicon-incorporated diamond like carbon (Si-DLC) coatings in contact with Si 3 N 4 counterbody were investigated using a ball-on-disc tribometer. The effect of modification by perfluoro and alkylphosphonic self-assembled monolayers was evaluated in terms of lowering the coefficient of friction (CoF) and wear rate. The tribological tests revealed that the presence of silicon decreases the CoF and slightly increases the wear rate of Si-DLC coatings in comparison with DLC. Further decrease of CoF was achieved for Si-DLC coatings after self-assembled monolayers deposition. The effectiveness of modification, stability on ultraviolet (UV) irradiation and characterization of all coatings was monitored by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Raman spectroscopy and measurements of the surface free energy (SFE). The obtained study demonstrated that self-assembled monolayers reduce friction and are highly promising candidates as a good lubricant for tribological and mechanical systems.

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Tribological and corrosive investigations of perfluoro and alkylphosphonic self-assembled monolayers on Ti incorporated carbon coatings

Cited by 16 publications

References 35 publications

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

Applications of soft biomaterials based on organic and hybrid thin films deposited from the vapor phase

The influence of self-assembled monolayers on tribological properties of Si-DLC coatings

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