Titanium Oxynitride Coatings Deposited By Magnetron Sputtering For Improvement Of Cardiovascular Stent Design

Duta, Oana Cristina; Ficai, Denisa; Ficai, A; Andronescu, Ecaterina; Beshchasna, Natalia; Saqib, Muhammad; Opitz, Jörg; Kraskiewicz, Honorata; Wasyluk, Łukasz; Kuzmin, Oleg S.; Пичугин, В. Ф.

doi:10.11159/icnfa18.112

Cited by 3 publications

(2 citation statements)

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“…The interest in titanium oxynitride films is due to the pronounced dependence of the oxynitrides properties on the N/O ratio [33,34,[43][44][45][46][47]. Titanium oxynitride coatings have been reported to have a large variety of applications, depending on the N/O ratio, presenting a wide variety of properties, such as biocompatibility [34,46,48], wear and corrosion resistance [33,38,49], being used as photocatalytic coatings [50,51], plasmonic material for nanophotonics [47], or solar selective absorbers [52], just to name a few. However, the variation of environmental factors, such as concentration, pH, oxidizing environment, temperature, and pressure, may disrupt their stability and hence may lead to undesired reactions [53].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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The reactive cathodic arc deposition technique was used to produce Ti nitride and oxynitride coatings on 304 stainless steel substrates (SS). Both mono (SS/TiN, SS/TiNO) and bilayer coatings (SS/TiN/TiNO and SS/TiNO/TiN) were investigated in terms of elemental and phase composition, microstructure, grain size, morphology, and roughness. The corrosion behavior in a solution consisting of 0.10 M NaCl + 1.96 M H2O2 was evaluated, aiming for biomedical applications. The results showed that the coatings were compact, homogeneously deposited on the substrate, and displaying rough surfaces. The XRD analysis indicated that both mono and bilayer coatings showed only cubic phases with (111) and (222) preferred orientations. The highest crystallinity was shown by the SS/TiN coating, as indicated also by the largest grain size of 23.8 nm, which progressively decreased to 16.3 nm for the SS/TiNO monolayer. The oxynitride layers exhibited the best in vitro corrosion resistance either as a monolayer or as a top layer in the bilayer structure, making them a good candidate for implant applications.

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Section: Introductionmentioning

confidence: 99%

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

et al. 2020

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“…Ti(N,O) coatings represent a valuable option due to their superior mechanical and tribological properties. The quite recent studies on titanium oxynitride films explored their dependency on the N/O ratio, which allow their use as solar selective absorbers [4], biocompatible materials [5,6], plasmonic material for nano-photonics [7], or photocatalytic coatings [8,9], to name a few. We previously reported on the improved corrosion resistance of cathodic acr deposited TiN coating in 0.10 M NaCl + 1.96 M H 2 O 2 solution with low oxygen concentration (about 7.3 at.%), compared to TiN coatings obtained using the same deposition method [10].…”

Section: Introductionmentioning

confidence: 99%

Effects of Film Thickness of ALD-Deposited Al2O3, ZrO2 and HfO2 Nano-Layers on the Corrosion Resistance of Ti(N,O)-Coated Stainless Steel

et al. 2023

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The goal of this stydy was to explore the potential of the enhanced corrosion resistance of Ti(N,O) cathodic arc evaporation-coated 304L stainless steel using oxide nano-layers deposited by atomic layer deposition (ALD). In this study, we deposited Al2O3, ZrO2, and HfO2 nanolayers of two different thicknesses by ALD onto Ti(N,O)-coated 304L stainless steel surfaces. XRD, EDS, SEM, surface profilometry, and voltammetry investigations of the anticorrosion properties of the coated samples are reported. The amorphous oxide nanolayers homogeneously deposited on the sample surfaces exhibited lower roughness after corrosion attack compared to the Ti(N,O)-coated stainless steel. The best corrosion resistance was obtained for the thickest oxide layers. All samples coated with thicker oxide nanolayers augmented the corrosion resistance of the Ti(N,O)-coated stainless steel in a saline, acidic, and oxidising environment (0.9% NaCl + 6% H2O2, pH = 4), which is of interest for building corrosion-resistant housings for advanced oxidation systems such as cavitation and plasma-related electrochemical dielectric barrier discharge for breaking down persistent organic pollutants in water.

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Current Trends in Improving Functional Properties of Intravascular Endoprostheses

Avgustovsky,

Komarovskaya

2023

Nauka teh.

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Cardiovascular diseases, and in particular, coronary heart disease are the most common cause of death worldwide. Finding the most effective method of treatment seems to be an advanced task. Stenting is a minimally invasive effective way to solve this problem. Immediately with the advent of endoprostheses (stents), there was a problem of repeated vasoconstriction (restenosis) due to neointimal hyperplasia (excessive build-up of the inner shell of the vessel), the causes of which are the release of metal ions from the stent material, damage to the artery wall during implantation, allergic reactions. Initially, they tried to find a solution by searching for the optimal design and material of the stent, as evidenced by the release of more than five hundred models of intravascular endoprostheses differing in design, material, geometric shape, profile, overall dimensions and other parameters. Currently, the most effective way to solve the problems of biocompatibility of stent materials is the formation of coatings on the surface of stents. It is possible to distinguish a number of different intravascular endoprostheses with modifiable coatings: secreting medicinal substances, with biodegradable coatings, with bioactive coatings. The paper presents the results of the analysis of the literature sources of the most advanced research in the field of surface modification of intravascular endoprostheses, which allowed to justify the choice of titanium oxynitride coating as recommended for further optimization and application due to high corrosion resistance, biocompatibility with cells, tissues and fluids of the human body, a good level of adhesion. At the same time there are a number of limiting factors associated with obtaining such coatings while maintaining all structural and technological requirements.

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Titanium Oxynitride Coatings Deposited By Magnetron Sputtering For Improvement Of Cardiovascular Stent Design

Cited by 3 publications

References 1 publication

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

In Vitro Corrosion of Titanium Nitride and Oxynitride-Based Biocompatible Coatings Deposited on Stainless Steel

Effects of Film Thickness of ALD-Deposited Al2O3, ZrO2 and HfO2 Nano-Layers on the Corrosion Resistance of Ti(N,O)-Coated Stainless Steel

Current Trends in Improving Functional Properties of Intravascular Endoprostheses

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