Evaluation and regulation of the corrosion resistance of macroporous titanium scaffolds with bioactive surface films for biomedical applications

2019 ◽  
Vol 7 (21) ◽  
pp. 3455-3467 ◽  
Author(s):  
Xingyu Zhou ◽  
Xi Fu ◽  
Hongjie Chen ◽  
Zhanwen Xiao ◽  
Li Min ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Biomedical Applications ◽  
Porous Titanium ◽  
Electrochemical Analysis ◽  
Surface Films ◽  
Bioactive Film

A three-layer bioactive film on porous titanium was constructed and evaluated for its corrosion resistance via electrochemical analysis.

Porous Titanium Scaffolds for Biomedical Applications: Corrosion Resistance and Structure Investigation

2011 ◽  
Vol 674 ◽  
pp. 41-46 ◽  
Author(s):  
Bogdan Dabrowski ◽  
Janusz Kaminski ◽  
Wojciech Swieszkowski ◽  
Krzysztof J. Kurzydlowski
Keyword(s):  
Corrosion Resistance ◽  
Biomedical Applications ◽  
Electrochemical Impedance ◽  
Biomedical Application ◽  
Total Porosity ◽  
Porous Titanium ◽  
Porous Metals ◽  
Porous Ti ◽  
A Cell ◽  
Good Biocompatibility

Due to its suitable physical properties and good biocompatibility, the titanium (Ti) can be used for development of porous structures for biomedical applications. The state of art in the field of corrosion resistance showed problems with corrosion analysis of porous metals. Therefore, it is essential to understand the influence of porosity of metals on corrosion parameters. The aim of this study was to investigate the corrosion resistance of highly porous titanium scaffolds for biomedical application. The Ti scaffolds were fabricated by powder metallurgy technique. The total porosity of the scaffolds ranged from 45 to 75%. The cast Ti sample was also tested for comparison. The electrochemical behavior of the Ti samples was monitored by electrochemical impedance spectroscopy (EIS) and potentiodynamic method at the room temperature. All electrochemical experiments were performed by a three-electrode technique in a cell containing a 0.9% NaCl electrolyte solution. With use of AAF, the active area of porous Ti was estimated. The porous Ti with porosity of 75% shows a better resistance to corrosion than the other porous Ti scaffolds. However, the corrosion resistance of Ti scaffolds was lower than cast Ti.

Anodic synthesis of TiO2 nanotubes by step-up voltages

2021 ◽  
pp. 002199832110237
Author(s):  
V Sivaprakash ◽  
R Narayanan
Keyword(s):  
Corrosion Resistance ◽  
Tio2 Nanotubes ◽  
Biomedical Applications ◽  
Phase Changes ◽  
Electrochemical Anodization ◽  
Corrosion Resistant ◽  
Anodization Process ◽  
Anodic Synthesis ◽  
Input Potential

Fabrication of TiO2 nanotubes (NTs) has extensive application properties due to their high corrosion resistant and compatibility with biomedical applications, the synthesis of TiO2 nanotubes over titanium has drawn interest in various fields. The synthesis of TiO2 NTs using novel in-situ step-up voltage conditions in the electrochemical anodization process is recorded in this work. For manufacturing the NTs at 1 hour of anodization, the input potential of 30, 40 and 50 V was selected. With increasing step-up voltage during the anodization process, an improvement in the NTs was observed, favoring corrosion resistance properties. The surface of NTs enhances the structure of the ribs, raising the potential for feedback over time. XRD was used to analyze phase changes, and HR-SEM analyzed surface topography. Impedance tests found that longer NTs improved the corrosion resistance.

Electrodeposition of MgO/Calcium Phosphate Composite Coatings on Titanium for Biomedical Applications

2013 ◽  
Vol 785-786 ◽  
pp. 872-876
Author(s):  
Yong Huang ◽  
Shu Guang Han ◽  
Ya Jing Yan ◽  
Xiao Feng Pang
Keyword(s):  
Corrosion Resistance ◽  
Phase Composition ◽  
Calcium Phosphate ◽  
Biomedical Applications ◽  
Lower Layer ◽  
Composite Coatings ◽  
Polarization Test ◽  
Coated Surface ◽  
Bare Titanium ◽  
Superior Corrosion Resistance

This work elucidated corrosion resistance of the electrodeposited MgO/calcium phosphate (Ca-P/MgO) films on titanium (Ti). The microstructure, phase composition, and corrosion resistance of the films were studied. Results revealed that The Ca-P/MgO composite coatings were rough and inhomogeneous, the upper layer was floral-like crystals or flakes agglomerates morphology, and the lower layer was needle-like crystals which were mutually cross linked. The coating was very dense, and the content of Mg was about 0.3 wt%. Potentiodynamic polarization test manifested that the Ca-P/MgO-coated surface exhibited superior corrosion resistance than the bare titanium.

Corrosion resistance of porous titanium in some aggressive media

1968 ◽  
Vol 7 (12) ◽  
pp. 977-981 ◽  
Author(s):  
D. S. Arensburger ◽  
V. S. Pugin ◽  
I. M. Fedorchenko
Keyword(s):  
Corrosion Resistance ◽  
Porous Titanium

scholarly journals Porous titanium for biomedical applications: An experimental study on rabbits

2010 ◽  
pp. e407-e412 ◽  
Author(s):  
LM. Vasconcellos ◽  
DO. Leite ◽  
FO. Nascimento ◽  
L.G. Vasconcellos ◽  
ML. Graca ◽  
...  
Keyword(s):  
Experimental Study ◽  
Biomedical Applications ◽  
Porous Titanium

scholarly journals An overview on the non-destructive in-depth surface analysis of corrosion-resistant films: A case study of W-xCr deposits in 12 M HCl solution

BIBECHANA ◽  
2021 ◽  
Vol 18 (1) ◽  
pp. 201-213
Author(s):  
Jagadish Bhattarai
Keyword(s):  
Corrosion Resistance ◽  
Depth Profiling ◽  
Surface Films ◽  
High Corrosion Resistance ◽  
Corrosion Rates ◽  
High Corrosion ◽  
Depth Analysis ◽  
Sputter Deposited ◽  
Non Destructive ◽  
Hcl Solution

Non-destructive in-depth analysis of the surface films formed on the sputter-deposited binary W-xCr (x = 25, 57, 91 at %) alloys in 12 M HCl solution open to air at 30 °C was investigated using an angle-resolved X-ray photoelectron spectroscopic (AR-XPS) technique to understand the synergistic corrosion resistance effects of showing very low corrosion rates, even lower than both alloying metals of the deposits. The average corrosion rates of these three tungsten-based sputter deposits found to be more than five orders of magnitude (between 3.1 × 10−3 and 7.2 × 10−3 mm/y) to that of chromium and also nearly one order of magnitude lower than that of tungsten metals. Such high corrosion resistance of the sputter-deposited W-xCr alloys is due to the formation of homogeneous passive double oxyhydroxide film consisting of Wox and Cr4+ cations without any concentration gradient in-depth after immersion in 12 M HCl solution open to air at 30 °C from the study of the non-destructive depth profiling technique of AR-XPS. Consequently, both alloying elements of tungsten and niobium are acted synergistically in enhancing high corrosion resistance properties of the alloys in such aggressive electrolyte. BIBECHANA 18 (2021) 201-213

Influence of calcium ion deposition on apatite-inducing ability of porous titanium for biomedical applications

2009 ◽  
Vol 5 (5) ◽  
pp. 1808-1820 ◽  
Author(s):  
Xiao-Bo Chen ◽  
Yun-Cang Li ◽  
Johan Du Plessis ◽  
Peter D. Hodgson ◽  
Cui’e Wen
Keyword(s):  
Calcium Ion ◽  
Biomedical Applications ◽  
Porous Titanium ◽  
Ion Deposition
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