Mechanically stable tantalum coating on a nano-roughened NiTi stent for enhanced radiopacity and biocompatibility

Park, Cheonil; Kim, Sung-Won; Kim, Hyoun‐Ee; Jang, Tae‐Sik

doi:10.1016/j.surfcoat.2016.08.014

Cited by 52 publications

(23 citation statements)

References 27 publications

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“…They are also found to form a layer-to-layer structure through overlapping on the surfaces. This result indicated that the implanted Ta is beneficial to the proliferation and osseointegration of cells on the pure Fe as it has previously been exhibited on the surface modifications of the other biomaterials, such as NiTi [11,12,17] and Co-Cr alloys [27].…”

Section: Resultssupporting

confidence: 65%

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In vitro corrosion behavior and cytocompatibility of pure Fe implanted with Ta

Wang

Zheng

Jiang

et al. 2017

Surface and Coatings Technology

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Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) AbstractIn this study, pure Fe was surface-modified by Ta

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Section: Resultssupporting

confidence: 65%

“…It is well known that Ta is a good bio-metallic element and has been widely used in biomedical applications [15][16][17]. Implantation of Ta can significantly improve the proliferation rate of L929 mouse fibroblast-like cells on the surface of NiTi alloy [12].…”

Section: Introductionmentioning

confidence: 99%

In vitro corrosion behavior and cytocompatibility of pure Fe implanted with Ta

Wang

Zheng

Jiang

et al. 2017

Surface and Coatings Technology

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“…It is also an ideal material for vascular stents considering its excellent in-body deformation and high strength. Among vascular stents, porous drug-eluting stents use surface micropores, which have the efficacy of drug-eluting stents and the long-term safety of bare metal stents for drug storage and release, thereby showing attractive prospects [4]. As a biological implant, stents must demonstrate good blood compatibility, which is closely related to the hydrophobicity of the material surface.…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristics and Hydrophobicity of Ni-Ti Alloy through Magnetic Mixed Electrical Discharge Machining

Feng

Zhang

et al. 2019

Materials

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Nickel–titanium (Ni-Ti) alloy has been selected as stent material given its good biocompatibility. In this study, experimental research on this material was conducted using magnetic field-assisted electrical discharge machining (EDM). The surface topography of the machined workpiece was analyzed with a scanning electron microscope (SEM). Hydrophobicity was measured by using an optical contact angle measuring instrument. The roughness values of different positions on the surface were measured using a TR200 roughness instrument. Results showed that the composite structure of solidification bulge–crater–pore–particle can be prepared on the surface of the Ni-Ti alloy through magnetic mixed EDM using suitable processing parameters. Moreover, the contact angle of the surface reaches 138.2°.

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“…Despite different investigations on the biological compatibility and corrosion resistance of titanium nickelide, which have shown an improbable toxic reaction to the human body [3 -5], various methods of improving bioinactivity are being studied. To solve this problem, different modes of modifying the surface of the alloys [6 -10] or coating deposition of elements with a higher biological compatibility and corrosion and wear resistance [11][12][13][14][15] are considered. The best known are the cases of improving the corrosion resistance of titanium nickelide base alloys by means of biocompatible tantalum, silicon, zirconium, and titanium coatings [9,[11][12][13][14]16,17] produced by magnetron deposition and ion sputtering or ion implantation.…”

Section: Introductionmentioning

confidence: 99%

Production of niobium vacuum-arc coating on a TiNi-based alloy

Senkevich

Гусев

Sitnikov³

et al. 2019

Lett. Mater.

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The aim of this work is to produce a niobium coating by vacuum-arc deposition on a TiNi-based alloy. This method has not been studied in relation to titanium nickelide base alloys and is promising for the production of corrosion and wear resistant coatings for medical and technical applications. The niobium coating is deposited on the semi-finished products (wire and cylindrical specimens) made of titanium nickelide base alloy of composition Ti 49.4 Ni 50.6 (at pct) and the surface subjected to mechanical grinding. It is stated that the obtained coating with a thickness of about 1 μm possesses drawbacks, such as 'inherited' surface profile formed by mechanical grinding of semi-finished products, and the drop phase, which is a typical unavoidable defect for this type of deposition method. At the same time, the surface layer of the alloy with a niobium coating exhibits a significantly higher microhardness (two times more) than the initial alloy. The effect of the revealed defects on the corrosion properties and wear resistance of the alloy requires further study. Bending deformation is used to study the mechanical behavior of the wire in the initial state and after coating deposition; it is stated that the coated wire exhibits superelastic behavior in bending identical to the initial wire. At the same time, deposition of the coating causes the formation of internal stress fields near the wire surface, and the effects of these fields lead to the elimination of non-recoverable deformation in the unloaded wire accumulated in the subsurface layers under loading.

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Mechanically stable tantalum coating on a nano-roughened NiTi stent for enhanced radiopacity and biocompatibility

Cited by 52 publications

References 27 publications

In vitro corrosion behavior and cytocompatibility of pure Fe implanted with Ta

In vitro corrosion behavior and cytocompatibility of pure Fe implanted with Ta

Surface Characteristics and Hydrophobicity of Ni-Ti Alloy through Magnetic Mixed Electrical Discharge Machining

Production of niobium vacuum-arc coating on a TiNi-based alloy

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