Microwave plasma oxidation of near-equiatomic NiTi alloy for obtaining low-Ni TiO2 coating

Bai, Jin; Gao, Jie; Zhang, Meng; Zheng, Kan; Cao, Y.; Mao, Yamei; Yu, Shengwang; He, Z. Y.

doi:10.1016/j.surfcoat.2021.127883

Cited by 6 publications

(4 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has already been shown by other authors that Ni-depleted TiO 2 on the surface of NiTi is hard to achieve . Wang et al similarly synthesized TiO 2 on the NiTi with the hydrothermal method in an NaOH solution, without Ti isopropoxide; however, the oxide formed contained about 20–30 atom % of Ni.…”

Section: Resultsmentioning

confidence: 99%

“…It has already been shown by other authors that Ni-depleted TiO 2 on the surface of NiTi is hard to achieve. 36 Wang et al 37 similarly synthesized TiO 2 on the NiTi with the hydrothermal method in an NaOH solution, without Ti isopropoxide; however, the oxide formed contained about 20–30 atom % of Ni. Hang et al 38 hydrothermally treated NiTi in an ultrapure water at 200 °C and showed that 30 min HT treatment decreases the Ni/Ti ratio (in comparison the Ni/Ti ratio is 0.28 for the untreated sample) close to 0, while prolonged HT treatment time (i.e., 60 and 120 min) led to increased Ni content on the surface until the Ni/Ti ratio reached 1.0 after HT treatment for 240 min.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method

et al. 2022

View full text Add to dashboard Cite

Implant-associated infections (IAI) are a common cause for implant failure, increased medical costs, and critical for patient healthcare. Infections are a result of bacterial colonization, which leads to biofilm formation on the implant surface. Nanostructured surfaces have been shown to have the potential to inhibit bacterial adhesion mainly due to antibacterial efficacy of their unique surface nanotopography. The change in topography affects the physicochemical properties of their surface such as surface chemistry, morphology, wettability, surface charge, and even electric field which influences the biological response. In this study, a conventional and cost-effective hydrothermal method was used to fabricate nanoscale protrusions of various dimensions on the surface of Ti, Ti 6 Al 4 V, and NiTi materials, commonly used in biomedical applications. The morphology, surface chemistry, and wettability were analyzed using scanning electron microscopy (SEM), X-ray photoemission spectroscopy (XPS), and water contact angle analysis. The antibacterial efficacy of the synthesized nanostructures was analyzed by the use of Escherichia coli bacterial strain. XPS analysis revealed that the concentration of oxygen and titanium increased on Ti and Ti 6 Al 4 V, which indicates that TiO 2 is formed on the surface. The concentration of oxygen and titanium however decreased on the NiTi surface after hydrothermal treatment, and also a small amount of Ni was detected. SEM analysis showed that by hydrothermal treatment alterations in the surface topography of the TiO 2 layer could be achieved. The oxide layer on the NiTi prepared by the hydrothermal method contains a low amount of Ni (2.8 atom %), which is especially important for implantable materials. The results revealed that nanostructured surfaces significantly reduced bacterial adhesion on the Ti, Ti 6 Al 4 V, and NiTi surface compared to the untreated surfaces used as a control. Furthermore, two sterilization techniques were also studied to evaluate the stability of the nanostructure and its influence on the antibacterial activity. Sterilization with UV light seems to more efficiently inhibit bacterial growth on the hydrothermally modified Ti 6 Al 4 V surface, which was further reduced for hydrothermally treated Ti and NiTi. The developed nanostructured surfaces of Ti and its alloys can pave a way for the fabrication of antibacterial surfaces that reduce the likelihood of IAI.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method

et al. 2022

View full text Add to dashboard Cite

show abstract

“…TiN deposited using a high-power pulsed magnetron sputtering technique exhibits high polarization resistance in simulated body fluid and demonstrates excellent MG63 osteoblast-like cell viability [19]. Analysis of the cytocompatibility of thin TiBN films showed increased compatibility with cells and toxicity of these coatings [20][21][22]. The TiN coating can enhance cell attachment, proliferation and proliferation on NiTi.…”

Section: Introductionmentioning

confidence: 99%

“…There are different methods of obtaining coatings, for example, when exposed to an atmosphere of air and flowing argon, thermal and electrochemical oxidation, magnetron sputtering, etc. [21][22][23][24][25]. Titanium oxide coatings are known for their high biocompatibility by increasing cytocompatibility, reducing metal corrosion and toxic ion release.…”

Section: Introductionmentioning

confidence: 99%

Biocompatibility Assessment of Coatings Obtained in Argon and Nitrogen Atmospheres for TiNi Materials

Марченко

Baigonakova

Kokorev

et al. 2022

Metals

View full text Add to dashboard Cite

This work aims to study the cytocompatibility of protective coatings obtained in argon and nitrogen atmospheres on a TiNi surface. Particular attention is paid to comparing the interaction of cell culture with coatings and an uncoated TiNi sample, using for comparison the number of viable cells on the surface, the phase composition, structure, wettability, surface charge and topography. The Ti/Ni/Ti nanolaminate was deposited on a TiNi substrate by magnetron sputtering. Reaction annealing of Ti/Ni/Ti nanolaminate on a TiNi substrate, when heated to 900 °C in argon, leads to the formation of a dense two-layer coating 2.0–2.1 μm thick: layer I (TiO + Ti2N), layer II (Ti4Ni2 O(N)). Reaction annealing in nitrogen leads to the formation of a thin three-layer nanocoating 250 nm thick: I (TiO2 + TiN), II (Ti4Ni2N(O) + Ti3Ni4), III (TiN). The coating synthesized in nitrogen is more favorable for cell attachment and proliferation because of the moderately hydrophilic rough surface and mixed phase composition of titanium nitrides and oxides.

show abstract

Effect of Microwaves on Food Carbohydrates

Kurek,

Wojtasik-Kalinowska,

Marcinkowska-Lesiak

et al. 2024

Food Engineering Series

View full text Add to dashboard Cite

Microwave plasma oxidation of near-equiatomic NiTi alloy for obtaining low-Ni TiO2 coating

Cited by 6 publications

References 45 publications

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method

Biocompatibility Assessment of Coatings Obtained in Argon and Nitrogen Atmospheres for TiNi Materials

Effect of Microwaves on Food Carbohydrates

Contact Info

Product

Resources

About

Microwave plasma oxidation of near-equiatomic NiTi alloy for obtaining low-Ni TiO2 coating

Cited by 6 publications

References 45 publications

Fabrication of Antibacterial TiO2 Nanostructured Surfaces Using the Hydrothermal Method

Fabrication of Antibacterial TiO2 Nanostructured Surfaces Using the Hydrothermal Method

Biocompatibility Assessment of Coatings Obtained in Argon and Nitrogen Atmospheres for TiNi Materials

Effect of Microwaves on Food Carbohydrates

Contact Info

Product

Resources

About

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method

Fabrication of Antibacterial TiO₂ Nanostructured Surfaces Using the Hydrothermal Method