Corrosion and biocompatibility of PPy/PEG coating electrodeposited on Ti6Al7Nb alloy

Mindroiu, Mihaela; Pîrvu, Cristian; Cîmpean, Anișoara; Demetrescu, Ioana

doi:10.1002/maco.201106480

Cited by 13 publications

(9 citation statements)

References 38 publications

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“…In order to improve the osseointegrative and anticorrosion behavior of Ti‐based alloys, surface modifications with polymers or titanium dioxide (TiO 2 ) have been extensively studied. One of the most explored techniques to form various morphologies of TiO 2 layers is electrochemical anodization of the metallic surface .…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Cotolan

Pop

Marconi

et al. 2014

Materials & Corrosion

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The morpho-structural and electrochemical properties of the oxide film formed on the implants surface play a decisive role for the bio-compatibility of titaniumbased prosthesis. The aim of the present work is to investigate and compare the corrosion behavior of titanium dioxide (TiO 2 ) coated Ti-6Al-7Nb prepared by anodic oxidation in two different electrolytes (1 M acetic acid (CH 3 COOH) and sulfuric acid (H 2 SO 4 ) solutions) and at two different oxidation potentials. The corrosion behavior of oxidized samples was investigated in Hank's simulated physiological solution, using cyclic polarization method and electrochemical impedance spectroscopy and the obtained results were compared with those recorded on bare Ti-6Al-7Nb in the same experimental conditions. The oxidation in CH 3 COOH was proven to be more beneficial for the corrosion resistance of Ti-6Al-7Nb samples than the oxidation in H 2 SO 4 of same concentration.

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Section: Introductionmentioning

confidence: 99%

Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Cotolan

Pop

Marconi

et al. 2014

Materials & Corrosion

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“…An improvement in the corrosion resistance property was attempted by the electro-co-deposition of PPy and PEG (composite coating) on Ti-6Al-7Nb alloy. The authors in this paper substantiated the crucial role of PEG in the corrosion tests carried out in Hank's balanced salt solution [55]. The biological response of G292 human OBs was tested onto these PPy/PEG films, showing a good cell viability and proliferation.…”

Section: Bio-inert Systems: Anticorrosion and Barrier Filmsmentioning

confidence: 58%

Electrochemical Strategies for Titanium Implant Polymeric Coatings: The Why and How

et al. 2019

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Among the several strategies aimed at polymeric coatings deposition on titanium (Ti) and its alloys, metals commonly used in orthopaedic and orthodontic prosthesis, electrochemical approaches have gained growing interest, thanks to their high versatility. In this review, we will present two main electrochemical procedures to obtain stable, low cost and reliable polymeric coatings: electrochemical polymerization and electrophoretic deposition. Distinction should be made between bioinert films—having mainly the purpose of hindering corrosive processes of the underlying metal—and bioactive films—capable of improving biological compatibility, avoiding inflammation or implant-associated infection processes, and so forth. However, very often, these two objectives have been pursued and achieved contemporaneously. Indeed, the ideal coating is a system in which anti-corrosion, anti-infection and osseointegration can be obtained simultaneously. The ultimate goal of all these coatings is the better control of properties and processes occurring at the titanium interface, with a special emphasis on the cell-coating interactions. Finally, advantages and drawbacks of these electrochemical strategies have been highlighted in the concluding remarks.

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“…Only the surfaces of TiNbTaZr oxidized at 800 °C exhibited a water contact angle θ > 65° (defined as hydrophobic surfaces). However, it is known that the wettability can significantly influence the cell adhesion .…”

Section: Resultsmentioning

confidence: 99%

The estimation of corrosion behavior of thermal oxidized TiNbTaZr alloys for biomedical applications

Mareci

Bolat

Munteanu

et al. 2014

Materials & Corrosion

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The corrosion behavior of two oxidized TiNbTaZr alloys (Ti25Nb8Ta10Zr and Ti21Nb15Ta6Zr) at 500 and 800 °C for 2‐h in 0.9 wt% NaCl solution are evaluated. Both samples were examined using electrochemical techniques: electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves. The electrochemical corrosion parameters obtained from the EIS and potentiodynamic polarization curves indicated a typical passive behavior for untreated and oxidized TiNbTaZr alloys. EIS studies showed high impedance values for both oxidized samples, increasing with exposure time. The polarization results show excellent corrosion resistance for oxidized TiNbTaZr alloys, corroborated by the low corrosion and anodic current density. The oxidation in air at 500 and 800 °C do not exhibit the susceptibility of localized corrosion processes in 0.9 wt% NaCl solution. In addition, scanning electron microscopy (SEM) was employed to observe the surface morphology after polarization test in 0.9 wt% NaCl solution. The oxidized Ti21Nb15Ta6Zr alloy appears to possess superior corrosion resistance than the oxidized Ti25Nb8Ta10Zr alloy in 0.9 wt% NaCl solution.

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Corrosion and biocompatibility of PPy/PEG coating electrodeposited on Ti6Al7Nb alloy

Cited by 13 publications

References 38 publications

Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Electrochemical Strategies for Titanium Implant Polymeric Coatings: The Why and How

The estimation of corrosion behavior of thermal oxidized TiNbTaZr alloys for biomedical applications

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Corrosion and biocompatibility of PPy/PEG coating electrodeposited on Ti6Al7Nb alloy

Cited by 13 publications

References 38 publications

Corrosion behavior of TiO2‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Corrosion behavior of TiO2‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Electrochemical Strategies for Titanium Implant Polymeric Coatings: The Why and How

The estimation of corrosion behavior of thermal oxidized TiNbTaZr alloys for biomedical applications

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Product

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Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid

Corrosion behavior of TiO₂‐coated Ti–6Al–7Nb surfaces obtained by anodic oxidation in sulfuric or acetic acid