Effect of Ta2O5/TiO2 thin film on mechanical properties, corrosion and cell behavior of the NiTi alloy implanted with tantalum

Li, Yan; Zhao, Tingting; Wei, Songbo; Xiang, Yan; Hong, Chang

doi:10.1016/j.msec.2010.07.001

Cited by 51 publications

(30 citation statements)

References 37 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%

“…Ion implantation is an effective technique to enhance the performance of biomedical alloys through adjusting their surface composition and microstructure [11][12][13][14]. It is well known that Ta is a good bio-metallic element and has been widely used in biomedical applications [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…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]. However, to the best of our knowledge, few studies have been reported on the effects of Ta ion implantation on the corrosion behavior and cytocompatibility of the pure Fe.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…For purpose of evaluating the effect of incident currents on surface characteristics, Ni ions release, and biocompatibility, three values for incident currents (1 mA, 2 mA, and 4 mA) were chosen based on the effect of currents on Ta implanted NiTi. 19 Hfimplanted NiTi samples with different currents are denominated as 1 mA NiTi, 2 mA NiTi, and 4 mA NiTi. All the samples were cleaned ultrasonically again after Hf implantation.…”

Section: Sample Preparationmentioning

confidence: 99%

Ni ion release, osteoblast–material interactions, and hemocompatibility of hafnium‐implanted NiTi alloy

Zhao

et al. 2011

J Biomed Mater Res

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Hafnium ion implantation was applied to NiTi alloy to suppress Ni ion release and enhance osteoblast-material interactions and hemocompatibility. The auger electron spectroscopy, x-ray photoelectron spectroscopy, and atomic force microscope results showed that a composite TiO(2)/HfO(2) nanofilm with increased surface roughness was formed on the surface of NiTi, and Ni concentration was reduced in the superficial surface layer. Potentiodynamic polarization tests displayed that 4 mA NiTi sample possessed the highest E(br) - E(corr), 470 mV higher than that of untreated NiTi, suggesting a significant improvement on pitting corrosion resistance. Inductively coupled plasma mass spectrometry tests during 60 days immersion demonstrated that Ni ion release rate was remarkably decreased, for example, a reduction of 67% in the first day. The water contact angle increased and surface energy decreased after Hf implantation. Cell culture and methyl-thiazol-tetrazolium indicated that Hf-implanted NiTi expressed enhanced osteoblasts adhesion and proliferation, especially after 7 days culture. Hf implantation decreased fibrinogen adsorption, but had almost no effect on albumin adsorption. Platelets adhesion and activation were suppressed significantly (97% for 4 mA NiTi) and hemolysis rate was decreased by at least 57% after Hf implantation. Modified surface composition and morphology and decreased surface energy should be responsible for the improvement of cytocompatibility and hemocompatibility.

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“…The aim of the given study is to investigate the surface layer structure of as-treated material at the nanoscale levels. The study is carried out for test specimens made of NiTi alloy, which were modified by the Taion beam implantation; the surface layer of as-treated alloy is found to possess an enhanced biocompatibility and satisfactory X-ray contrast range [3,4]. The ion beam implantation would cause oxide layers, TiO2 included, to form on the surface of Ti and Ti-based alloys, which is liable to enhance the biocompatibility, chemical stability, non-toxicity, and absorptive capacity of as-treated material [2,4].…”

Section: Introductionmentioning

confidence: 99%