Production, structure and biocompatible properties of oxide nanotubes on Ti13Nb13Zr alloy for medical applications

Stróż, Agnieszka; Łosiewicz, B.; Zubko, Maciej; Chmiela, Bartosz; Balin, Katarzyna; Dercz, Grzegorz; Gawlikowski, M.; Goryczka, Tomasz

doi:10.1016/j.matchar.2017.09.004

Cited by 30 publications

(80 citation statements)

References 46 publications

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“…This alloy was developed by Davidson and Kovacs [16] in 1992, and was found to exhibit excellent biocompatibility. The process of formation of TiO 2 nanotubes on this alloy was investigated by Stróż et al [17,18] and Ossowska et al [19]. Electrochemical corrosion (1) TiO 2 + h (UV) = TiO 2 (e − ) + TiO 2 h + behaviour in Ringer's solution of nanotubular oxide developed on its surface as well as the influence of the heat treatment was reported by Saji and Choe [20].…”

Section: Introductionmentioning

confidence: 93%

Synthesis of oxide nanotubes on Ti13Nb13Zr alloy by the electrochemical method

Handzlik

Gutkowski

2019

J Porous Mater

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Surface modification of titanium alloys expands the range of their applicability in medicine, particularly in the form of various implants. Present work reports the results of the electrochemical formation of self-ordered oxide nanotubes on Ti13Nb13Zr alloy. Due to its relatively low Young modulus (77-79 GPa) this alloy can be attractive material for orthopedic application. The experiments were conducted in the (NH 4) 2 SO 4 + NH 4 F electrolyte at room temperature. Anodization of the alloy samples was carried out for 2 h under variable external potential U (in the range from 10 to 45 V) and the current versus time transients were recorded. Obtained surface morphology was investigated by the scanning electron microscopy and the X-ray techniques. The morphological parameters of the obtained nanotubes such as the inner (d in) and outer (d out) diameters were determined. The tubes diameter dependence on the voltage of anodization process was derived. The dependence d[nm] = f(U) [V] was established at constant temperature 25 °C. It provides the basis for controlled oxide nanotubes layer growth. It was also demonstrated that these nanotubes exhibit photocatalytic activity.

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Section: Introductionmentioning

confidence: 93%

Synthesis of oxide nanotubes on Ti13Nb13Zr alloy by the electrochemical method

Handzlik

Gutkowski

2019

J Porous Mater

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“…The electrode potential was stabilized until a constant E OC value was obtained due to the fact that the EIS method is only applicable to electrochemical systems that behave linearly and are in steady-state. For approximation of experimental impedance data that were obtained in the case of S1 and S2 electrodes, the simplest electrical equivalent circuit in the form of the Randles circuit was used [46][47][48]. A solution resistance (R s ) in series with a parallel connection of a double layer capacitance (C dl ) and a charge transfer resistance (R ct ) was used to model the AC impedance data.…”

Section: In Vitro Corrosion Resistance Testsmentioning

confidence: 99%

“…It produces one semicircle on the complex plane plot (R s , CPE-T 1 , CPE-φ 1 , R ct1 ). Such a model is well-known in the testing of corrosion resistance of NiTi alloy in a simulated human body solution [46][47][48].…”

Section: In Vitro Corrosion Resistance Testsmentioning

confidence: 99%

“…According to the latest trends in implantology, this is achieved by covering the biomaterial surface with coatings having a chemical composition similar to that of the surrounding tissues. Bioactive coatings support the regeneration process by stimulating the reconstruction of tissues that surround the implant; they can be a source of tissue-forming elements and a carrier of medicinal substances, but, above all, they must meet the strict requirements for corrosion resistance in a biological environment [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of the NiTi Shape Memory Alloy Surface by HAp/SiO2/Ag Hybrid Coatings Formed on SiO2-TiO2 Glass Interlayer

2020

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The surface modification of NiTi shape memory alloys is a method for increasing their multi-functionalities. In our solution, hydroxyapatite powder was mixed with a chemically synthesized silicon dioxide/silver (nSiO2/Ag) nanocomposite in a different weight ratio between components (1:1, 5:1, and 10:1) and then electrophoretically deposited on the surface of the NiTi alloy, under various time and voltage conditions. Subsequently, uniform layers were subjected to heat treatment at 700 °C for 2 h in an argon atmosphere to improve the strength of their adhesion to the NiTi substrate. A change in linear dimensions of the co-deposited materials during the sintering process was also analyzed. After the heat treatment, XRD, Raman, and Scanning Electron Microscopy (SEM) + Energy Dispersive Spectrometer (EDS) studies revealed the formation of completely new composite coatings, which consisted of rutile and TiO2-SiO2 glass with silver oxide and HAp particles that were embedded into such coatings. It was found that spalling characterized the 1:1 ratio coating, while the others were crack-free, well-adhered, and capable of deformation to 3.5%. Coatings with a higher concentration of nanocomposite were rougher. Electrochemical impedance spectroscopy (EIS) tests in Ringer’s solution revealed the capacitive behavior of the material with high corrosion resistance. The kinetics and susceptibility to pitting corrosion was the highest for the NiTi electrode that was coated with a 5:1 ratio HAp/nSiO2/Ag hybrid coating.

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“…In order to increase the biocompatibility of implants the oxide layers, polymeric or ceramic coatings are applied on their surface. [6][7][8][9][10][11][12] They increase the corrosion resistance of the implant and may also be a matrix with embedded tissue-forming, antibacterial and/or anticoagulant substances. 13 An interesting technique for obtaining coatings for medical use is the electrophoretic deposition (EPD) method.…”

Section: Introductionmentioning

confidence: 99%