Effect of replacement of vanadium by iron on the electrochemical behaviour of titanium alloys in simulated physiological media

Mareci, Daniel; Lucero, V.A.; Mirza, J.

doi:10.3989/revmetalm.0750

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…However, TT-Ti surfaces immersed in BSA and FBS (Fig. 4) show Ecorr constant over the 7 days, maintaining near −0.080 V. The incorporation of P and Ca in the surface promotes less active surface promotes less active surface that agree with the results obtained in other works (Mareci et al, 2009). However, albumin is quickly adsorbed on the surface achieving a stationary state from the first day of testing at more active potentials.…”

Section: Characterization Of Tt-ti Surfaces After Immersion In the DIsupporting

confidence: 82%

Interaction of inorganic and organic compounds of physiological fluids with thermally treated Ti surfaces

Burgos-Asperilla¹,

Gamero²,

Escudero³

et al. 2014

REVMETAL

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ABSTRACT:The study of the interaction between the thermally treated Ti (TT-Ti) at 277 °C for 5 hours and the body fluids, ranging from the simplest to the most complex solution is analysed. Electrochemical techniques such as the measurement of the corrosion potential, electrochemical impedance spectroscopy and the polarization curves have been used. The characterization of TT-Ti has been performed by scanning electron microscopy, atomic force microscopy and X-ray Photoelectron Spectroscopy (XPS). The XPS reveals that the peak intensity associated with phosphate and calcium increases as immersion time does. However, the albumin covers rapidly the surface since the C peak intensity remains constant from the first day to the end of immersion time. The calcium ions have a bridging effect on the electrostatic adsorption of phosphate ions as well as that of albumin and the acidic hydroxyl groups of the oxide layer. The impedance measurement shows that the resistance of the oxide layer immersed in albumin and foetal bovine serum decrease probably due to the formation of organometallic complex. The polarization curves reveal that the presence of proteins decreases the current of anodic branch indicating that the proteins work as a barrier on the surface. RESUMEN: Interacción de compuestos inorgánicos y orgánicos de fluidos fisiológicos con superficies de Ti tratadas térmicamente.Se estudia la interacción del Ti oxidado a 277 °C durante 5 horas con compuestos orgá-nicos e inorgánicos presentes en los fluidos fisiológicos, desde la solución más simple a la más compleja. Se han utilizado técnicas electroquímicas como la evolución del potencial de corrosión, espectroscopía de impedancia electroquímica y curvas de polarización, y la espectroscopía de fotoelectrones de rayos X (XPS). El XPS revela que la intensidad de los picos asociados a los iones fosfato y calcio aumenta con el tiempo de inmersión. Sin embargo, la albúmina cubre desde el primer día la superficie, ya que la intensidad de los picos asociados a la presencia de C permanece prácticamente constante hasta el final del ensayo. Los iones calcio actúan como puente de unión entre los iones fosfato y la albúmina, y los grupos hidroxilo ácidos de la capa de óxido. Las medidas de impedancia muestran que la resistencia de la capa de óxido en albúmina y FBS disminuye probablemente debido a la formación de complejos órgano-metálicos. Las curvas de polarización revelan que cuando la solución contiene proteínas, la intensidad de la rama anódica disminuye indicando que las proteínas ejercen un efecto barrera sobre la superficie del Ti.

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Section: Characterization Of Tt-ti Surfaces After Immersion In the DIsupporting

confidence: 82%

Interaction of inorganic and organic compounds of physiological fluids with thermally treated Ti surfaces

Burgos-Asperilla¹,

Gamero²,

Escudero³

et al. 2014

REVMETAL

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“…Thus, increase of grain boundaries associated with the high-energy milling time can be considered as another factor for decreased corrosion resistance. Vanadium is known to distribute and make biological interaction inside the human body and have toxic effects [21,22]. Pitting corrosion is usually observed in neutral environments containing chlorine.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the electrochemical corrosion properties of high-energy milled Ti6Al4V alloy in simulated body fluid environment

Şimşek

Özyürek

2019

Powder Metallurgy

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In this study, the electrochemical corrosion properties of high-energy milled Ti6Al4V alloy are investigated. The Ti6Al4V alloy is produced by high-energy milling at different milling times in mechanical milling device as 15-120 min. Produced alloy powders are cold-pressed under 620 MPa pressure and sintered at 1300°C temperature and characterised by scanning electron microscopy (SEM), X-ray diffraction, hardness and density measurements. Corrosion tests are conducted in simulated body fluid at 37°C body temperature. Results showed that the average particle size of the powder is reduced, and the hardness of the alloy is increased with the increasing milling time. It is determined that the corrosion properties of the alloys change by the high-energy milling time, and the corrosion rate increases by the decreasing particle size of the powder. SEM examination of the corroded surfaces after potentiodynamic polarisation tests revealed that pitting formation tendency of the alloys on the alloy surface increases by the increasing high-energy milling time.

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“…The TiAlV alloy has an excellent in vivo performance, which makes it the most commonly used prosthetic metallic materials for rods in prostheses for joint and dental implants. However, new research into this alloy, based on the changes in chemical composition, has been carried out with the aim of obtaining alloys with optimal microstructures designed to achieve mechanical properties similar to those of bone and with high corrosion resistance and enhanced biocompatibility promoted by faster integration with bone tissue and minimum bacterial proliferation (Mareci et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Bacteria may also be the cause of the orthopedic implant removal following aseptic loosening (Geetha et al, 2009;Raphel et al, 2016). Specifically, Staphylococcus epidermis form biofilms on the prostheses surface, being the principal causes of antibiotic resistance and responsible for the implant replacement (Mareci et al, 2009). So, the success of the implant is based on promoting osseointegration and inhibiting microbial adhesion.…”

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confidence: 99%

Biocompatibilidad de osteoblastos e inhibición de adhesión bacteriana a la aleación Ti6Al4V tratada térmica y químicamente

et al. 2021

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El objetivo de este trabajo ha sido estudiar si los tratamientos térmicos y de conversión química mejoran la biocompatibilidad de la aleación TiAlV y reducen el crecimiento bacteriano. En primer lugar, se modificó la aleación de TiAlV mediante tratamiento térmico a 650 ºC durante 1 hour. Luego, se llevó a cabo la conversión química en una solución de CeCl3 para generar óxido de cerio. Las superficies modificadas se caracterizaron utilizando AFM y SEM-EDX. La adhesión de osteoblastos y la formación de biopelículas microbianas se midieron in vitro con la línea celular de osteoblastos MC3T3-E1 y Staphylococcus epidermidis ATCC 35983, respectivamente. La viabilidad bacteriana se cuantificó a través del contenido en trifosfato de adenosina (ATP) como medida de la actividad metabólica. La morfología y la proliferación en superficies modificadas se analizaron mediante SEM-EDX. Los resultados revelaron que el TiAlV tratado térmicamente mostró una mayor proliferación osteoblástica asociada con una mayor rugosidad y estructura cristalina del rutilo. Las superficies modificadas no causaron efecto bactericida, pero las superficies de TiAlV con ceria mostraron una disminución en la adhesión bacteriana, es decir, menos proliferación bacteriana y por tanto disminución en la colonización bacteriana.

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Effect of replacement of vanadium by iron on the electrochemical behaviour of titanium alloys in simulated physiological media

Cited by 4 publications

References 22 publications

Interaction of inorganic and organic compounds of physiological fluids with thermally treated Ti surfaces

Interaction of inorganic and organic compounds of physiological fluids with thermally treated Ti surfaces

Investigation of the electrochemical corrosion properties of high-energy milled Ti6Al4V alloy in simulated body fluid environment

Biocompatibilidad de osteoblastos e inhibición de adhesión bacteriana a la aleación Ti6Al4V tratada térmica y químicamente

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