A comparative study of the <i>in vitro</i> corrosion behavior and cytotoxicity of a superferritic stainless steel, a Ti‐13Nb‐13Zr alloy, and an austenitic stainless steel in Hank's solution

Assis, S. L.; Rogero, Sizue Ota; Antunes, Renato Altobelli; Padilha, Angelo Fernando; Costa, Isolda

doi:10.1002/jbm.b.30205

Cited by 44 publications

(37 citation statements)

References 25 publications

(24 reference statements)

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“…A passive oxide layer of an alloy typically shows one time constant in the impedance spectrum. [3] If there are two time constants, the first one stands for the mentioned passive oxide film and the second time constant signifies a porous outer layer [3,[29][30][31][32] or a deposited film. [22] Different adsorbing layers also have different time constants.…”

Section: Fundamentalsmentioning

confidence: 99%

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

2008

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Electrochemical impedance spectroscopyElectrochemical impedance spectroscopy is an easy applicable sensitive technique. It is used to get information about the adsorption behaviour and the interactions of biomolecules with the electrode surface in a short measurement duration. Electrochemical processes can be modelled by an equivalent circuit and various parameters reflecting certain properties of the interface can be determined. The electrochemical properties of the interface are influenced by proteins and cells adsorbing at the surface. Different modified surfaces can be analyzed before, during, and after cell contact, respectively. Applying bias potentials also changes the behaviour of attaching cells and proteins. Changes in the medium composition have an influence on the electrochemically detectable surface properties.Biosensors are developed consecutively to detect biomolecules. Enzymes, lipids and membranes can be analyzed and the adsorption behaviour of DNA and antigens at modified electrode surfaces can be determined. Different technologies using microchips were constructed to allow a fast screening of electrochemical properties and discrimination of biological molecules or cells. ApplicationElectrochemical impedance spectroscopy serves not only for determination of the capacity of new battery materials or corrosion behaviour and long term stability of diverse alloys and oxide layers, it can also be used to gain information about biomolecules. The adsorption behaviour of cells [1][2][3] and proteins, [4] the amount of adsorbed proteins, [4][5][6][7] surface charge densities [4][5][6] and adsorption coefficients [5] can be determined. Interactions of implant surfaces with biological devices, changes in the polarizability of functional groups, the transport of ions or dipoles through polymer layers and mineralization processes, for instance of bone tissue can be assessed. The change of the Gibbs free energy and the entropy due to protein binding to the surface can be calculated [4,6,8] and the affinity of biomolecules to the surface can be estimated. [4] Electrochemical techniques are introduced as biosensors. Antigens, ssDNA or enzymes are immobilized at the surface and according antibodies, DNA and distinct proteins can be ADVANCED ENGINEERING MATERIALS 2008, 10, No. 10

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Section: Fundamentalsmentioning

confidence: 99%

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

2008

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“…The growth of an oxide layer via plasma electrolytic oxidation, local breakdown with a small spark, and the subsequent oxygen gas evolution resulted in the formation of this complicated structure [42,43]. The EIS is a very useful method for the determination of the corrosion resistance of the Ti-13Nb-13Zr alloy [30,[44][45][46][47][48]. Though Nyquist plots are relatively featureless, the Bode plots are more indicative for the changes in the electrochemical characteristics of the system during aging.…”

Section: Resultsmentioning

confidence: 99%

Anodic oxidation of the Ti–13Nb–13Zr alloy

Mosiałek

Nawrat

Szyk-Warszyńska

et al. 2014

J Solid State Electrochem

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This work presents the results of the investigations on the electropolishing and anodic oxidation of the Ti-13Nb-13Zr titanium alloy. Electropolishing was conducted in the solution containing ammonium fluoride and sulfuric acid, whereas the solution of phosphoric acid was used for anodic oxidation of the alloy. The influence of electropolishing and anodization process parameters on the texture (scanning electron microscopy (SEM)) and chemical composition (X-ray photoelectron spectroscopy (XPS)) of the surface layer was established. Electrochemical impedance spectroscopy in 5 % NaCl solution was used for the determination of the corrosion resistance of the alloy.

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“…Therefore, when it is used in joint prostheses, the build-up of debris is inevitable, which leads to an inflammatory response [16,17]. In order to preserve the beneficial properties of the Ti-6Al-4V alloy and alleviate the harmful effects caused by vanadium and aluminium, these components can be substituted with other α-and β-stabilising elements, such as niobium, tantalum and zirconium, which are biocompatible [11,[17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Modification of niobium surfaces using plasma electrolytic oxidation in silicate solutions

Sowa

Kazek-Kęsik

Krząkała

et al. 2013

J Solid State Electrochem

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Herein, a study of the plasma electrolytic oxidation (PEO) of niobium in an anodising bath composed of potassium silicate (K 2 SiO 3 ) and potassium hydroxide (KOH) is reported. The effects of the K 2 SiO 3 concentration in the bath and the process voltage on the characteristics of the obtained oxide layers were assessed. Compact, barrier-type oxide layers were obtained when the process voltage did not exceed the breakdown potential of the oxide layer. When this threshold was breached, the morphology of the oxide layer changed markedly, which is typical of PEO. A significant amount of silicon, in the form of amorphous silica, was incorporated into the oxide coatings under these conditions compared with the amount obtained with conventional anodising. This surface modification technique led to an improvement in the corrosion resistance of niobium in Ringer's solution, regardless of the imposed process conditions.

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A comparative study of the in vitro corrosion behavior and cytotoxicity of a superferritic stainless steel, a Ti‐13Nb‐13Zr alloy, and an austenitic stainless steel in Hank's solution

Cited by 44 publications

References 25 publications

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

Biomaterial Interface Investigated by Electrochemical Impedance Spectroscopy

Anodic oxidation of the Ti–13Nb–13Zr alloy

Modification of niobium surfaces using plasma electrolytic oxidation in silicate solutions

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