Corrosion behaviour of Ti–6Al–7Nb and Ti–6Al–4V ELI alloys in the simulated body fluid solution by electrochemical impedance spectroscopy

2006 ◽  
Vol 52 (3) ◽  
pp. 839-846 ◽  
Author(s):  
S. Tamilselvi ◽  
V. Raman ◽  
N. Rajendran
RSC Advances ◽  
2014 ◽  
Vol 4 (53) ◽  
pp. 27791-27795 ◽  
Author(s):  
A. Srinivasan ◽  
Kwang Seon Shin ◽  
N. Rajendran

The change in impedance values as a function of potential indicated the transformation of Mg from its passive to active state.


2008 ◽  
Vol 396-398 ◽  
pp. 393-396 ◽  
Author(s):  
D. Ionita ◽  
Doina Raducanu ◽  
Mariana Prodana ◽  
Ioana Demetrescu

The paper is an electrochemical study regarding the influence of different acid etching conditions on the corrosion behaviour of a new Ti based bioalloy with Nb, Ta and Zr. Open circuit, potentiodynamic and electrochemical impedance spectroscopy were the methods performed in a simulated body fluid (SBF) and a stability mechanism was discussed in terms of equivalent circuits.


2012 ◽  
Vol 77 (11) ◽  
pp. 1609-1623 ◽  
Author(s):  
Ana Jankovic ◽  
Sanja Erakovic ◽  
Antonija Dindune ◽  
Djordje Veljovic ◽  
Tatjana Stevanovic ◽  
...  

Titanium is a key biomedical material due its good biocompatibility, mechanical properties and corrosion stability, but infections of the implantation site still pose serious threat. One approach to prevent infection is to improve antimicrobial ability of the coating material. Silver doped hydroxyapatite (Ag/HAP) nanoparticles were synthesized by new modified precipitation method. The synthesized powder was used for preparation of Ag/HAP coating on titanium by electrophoretic deposition. The coating was characterized in terms of phase composition and structure by Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray diffraction (XRD); surface morphology and chemical composition was assessed using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Research focused on evaluation of the corrosion behaviour of Ag/HAP coating in simulated body fluid (SBF) at 37 ?C during prolonged immersion time by electrochemical impedance spectroscopy (EIS). Silver doped HAP coating provided good corrosion protection in SBF solution.


RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 80275-80285 ◽  
Author(s):  
Bhavana Rikhari ◽  
S. Pugal Mani ◽  
N. Rajendran

In the present work, dynamic electrochemical impedance spectroscopy (DEIS) was used to investigate the corrosion behavior of polypyrrole (PPy)-coated titanium (Ti) in simulated body fluid (SBF) solution.


2013 ◽  
Vol 765 ◽  
pp. 803-807
Author(s):  
Gaur Swati ◽  
Anand Sawroop Khanna ◽  
Raghuvir Kumar Singh Raman

In the present study, combinations of a phosphonato silane with a precursor, Methyltriethoxy silane (MTEOS) in various ratios were applied onto the alloy Mg-6Zn-Ca. The corrosion resistance of the coated and uncoated specimens in a modified simulated body fluid (m-SBF) was characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results suggest that the silane coating significantly decreases the degradation rate of the magnesium alloy, indicating its potential to be used as a corrosion barrier for magnesium alloy temporary implants.


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