Scratch-resistant and well-adhered nanotube arrays produced via anodizing process on β-titanium alloy

Pereira, Bruno Leandro; Beilner, Gregory; Lepienski, Carlos Maurício; Souza, Gelson Biscaia de; Kuromoto, Neide K.; Szameitat, Erico Saito; Peng, A.; Lee, Jia-Yee; Claro, Ana Paula Rosifini Alves; Nugent, Michael

doi:10.1016/j.mtcomm.2020.101947

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…This behavior is related to increased hardness, brittleness, and poor adhesion of the TNTs on the substrate [20]. Moreover, the adhesion strength is directly related to the coating's durability [8]. This is possibly associated with forming a layer between the oxide film and Ti substrate due to fluoride ions migration during the growth of the oxide film [30].…”

Section: Nanoscratchmentioning

confidence: 99%

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Effect of Anodization Time on the Adhesion Strength of Titanium Nanotubes Obtained on the Surface of the Ti–6Al–4V Alloy by Anodic Oxidation

et al. 2023

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In this work, titanium oxide nanotubes (TNTs) were formed by anodic oxidation on the surface of a Ti–6Al–4V alloy. An electrolyte based on ethylene glycol (EG) and ammonium fluoride (NH4F) was used. Different anodizing periods (10, 20, 30, 40, 50, and 60 min) with a constant potential of 60 V were established. The morphology of the TNT array was observed by scanning electron microscopy (SEM). The adhesion strength of the TNTs to the Ti–6Al–4V surface was evaluated using nanoscratch tests. The critical load of the different TNT layers was determined from the analysis of the groove of the nanoindenter path. It ranged from 0 mN for the samples exposed to 10 min of anodization to 47.0 ± 3.0 mN for samples exposed to 50 min. These results indicate the TNT layers formed at 50 min presented the best substrate adhesion among the specimen tested.

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Section: Nanoscratchmentioning

confidence: 99%

“…Titanium oxide nanotubes have been considered for applications such as biomaterials, catalysis, sensors, and solar cells [8]. Nanotube oxide layers can be formed on titanium and its alloys surfaces by anodic oxidation to enhance bone cell proliferation due to their ordered morphologies and vertically oriented arrangement [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Anodization Time on the Adhesion Strength of Titanium Nanotubes Obtained on the Surface of the Ti–6Al–4V Alloy by Anodic Oxidation

et al. 2023

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“…Therefore, large efforts have been focused on the surface modification of implant materials. Alongside the most widely used titanium and its alloys (in particular the medical titanium alloy Ti-6Al-4V) [4][5][6], many studies have been conducted on other bio-metals (aluminum, tantalum, magnesium, zirconium, niobium, and their alloys), employing anodic oxidation to grow porous oxide layers enriched in osteoconductive ionic inclusions [7][8][9][10][11][12][13][14][15][16][17][18]. Pointing to niobium, attention has been focused on the oxide enrichment in Ca and P compounds for osteointegration purposes using various electrolytes: a porous oxide layer structure has been reported, with morphology and composition depending on electrolyte, applied potential, limiting current and process time [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A Two-Step Approach to Tune the Micro and Nanoscale Morphology of Porous Niobium Oxide to Promote Osteointegration

et al. 2022

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We present a two-step surface modification process to tailor the micro and nano morphology of niobium oxide layers. Niobium was firstly anodized in spark regime in a Ca- and P-containing solution and subsequently treated by acid etching. The effects of anodizing time and applied potential on the surface morphology is investigated with SEM and AFM, complemented by XPS compositional analysis. Anodizing with a limiting potential of 250 V results in the fast growth of oxide layers with a homogeneous distribution of micro-sized pores. Cracks are, however, observed on 250 V grown layers. Limiting the anodizing potential to 200 V slows down the oxide growth, increasing the anodizing time needed to achieve a uniform pore coverage but produces fracture-free oxide layers. The surface nano morphology is further tuned by a subsequent acid etching process that leads to the formation of nano-sized pits on the anodically grown oxide surface. In vitro tests show that the etching-induced nanostructure effectively promotes cell adhesion and spreading onto the niobium oxide surface.

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Electrochemical Insertion of Zinc Ions into Self‐Organized Titanium Dioxide Nanotube Arrays to Achieve Strong Osseointegration with Titanium Implants

Zhao

Wang

Liu

et al. 2022

Adv Materials Inter

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The construction of titanium dioxide (TiO2) nanotube arrays on the surface of metallic titanium has been demonstrated as a practical approach for improving the biocompatibility of titanium orthopedic implants. However, it remains a challenge to form strong bonds between such TiO2‐based systems and the surrounding bone due to their lack of osseointegration ability. Herein, inspired by the intercalation mechanism of rechargeable batteries, a feasible electrochemical strategy is developed to insert high‐concentration bioactive zinc ions into the lattices of TiO2 nanotube arrays with a controlled release performance and without nanostructure collapse. The zinc ion‐inserted TiO2 nanotube arrays give titanium implants that exhibit excellent osteogenesis properties due to the synergistic effect of the nanotube topography and the release of zinc ions. Using the proposed electrochemical zinc insertion technique, the prepared substrates can trigger the osteogenic differentiation of bone marrow‐derived mesenchymal stem cells (MSCs) in vitro and subsequent implant‐to‐bone osseointegration in vivo. This study establishes a feasible and general electrochemical method to enhance the bioactivity and osseointegration of titanium implants, thereby providing a promising strategy for bone tissue repair.

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Scratch-resistant and well-adhered nanotube arrays produced via anodizing process on β-titanium alloy

Cited by 4 publications

References 31 publications

Effect of Anodization Time on the Adhesion Strength of Titanium Nanotubes Obtained on the Surface of the Ti–6Al–4V Alloy by Anodic Oxidation

Effect of Anodization Time on the Adhesion Strength of Titanium Nanotubes Obtained on the Surface of the Ti–6Al–4V Alloy by Anodic Oxidation

A Two-Step Approach to Tune the Micro and Nanoscale Morphology of Porous Niobium Oxide to Promote Osteointegration

Electrochemical Insertion of Zinc Ions into Self‐Organized Titanium Dioxide Nanotube Arrays to Achieve Strong Osseointegration with Titanium Implants

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