Morphology, composition and electrochemical properties of bioactive-TiO2/HA on CP-Ti and Ti6Al4V substrates fabricated by alkali treatment of hybrid plasma electrolytic oxidation process (estimation of porosity from EIS results)

2019 ◽  
Vol 375 ◽  
pp. 266-291 ◽  
Author(s):  
H. Fakhr Nabavi ◽  
M. Aliofkhazraei
Keyword(s):  
Electrochemical Properties ◽  
Plasma Electrolytic Oxidation ◽  
Oxidation Process ◽  
Alkali Treatment ◽  
Electrolytic Oxidation ◽  
Hybrid Plasma ◽  
Plasma Electrolytic ◽  
Cp Ti

scholarly journals Comparison of Biocompatible Coatings Produced by Plasma Electrolytic Oxidation on cp-Ti and Ti-Zr-Nb Superelastic Alloy

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 401
Author(s):  
Ruzil Farrakhov ◽  
Olga Melnichuk ◽  
Evgeny Parfenov ◽  
Veta Mukaeva ◽  
Arseniy Raab ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Electrochemical Impedance ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
X Ray ◽  
Kinetic Coefficients ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Cp Ti ◽  
Peo Coatings

The paper compares the coatings produced by plasma electrolytic oxidation (PEO) on commercially pure titanium and a novel superelastic alloy Ti-18Zr-15Nb (at. %) for implant applications. The PEO coatings were produced on both alloys in the identical pulsed bipolar regime. The properties of the coatings were examined using scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDX), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS). The PEO process kinetics was modeled based on the Avrami theorem and Cottrell equation using a relaxation method. The resultant coatings contain TiO2, for both alloys, and NbO2, Nb2O5, ZrO2 for Ti-18Zr-15Nb alloy. The coating on the Ti-18Zr-15Nb alloy has a higher thickness, porosity, and roughness compared to that on cp-Ti. The values of the kinetic coefficients of the PEO process—higher diffusion coefficient and lower time constant for the processing of Ti-18Zr-15Nb—explain this effect. According to the electrochemical studies, PEO coatings on Ti-18Zr-15Nb alloy provide better corrosion protection. Higher corrosion resistance, porosity, and roughness contribute to better biocompatibility of the PEO coating on Ti-18Zr-15Nb alloy compared to cp-Ti.

Fractal approach to surface roughness of TiO2/WO3 coatings formed by plasma electrolytic oxidation process

2013 ◽  
Vol 539 ◽  
pp. 112-116 ◽  
Author(s):  
L.J. Rožić ◽  
S. Petrović ◽  
N. Radić ◽  
S. Stojadinović ◽  
R. Vasilić ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Plasma Electrolytic Oxidation ◽  
Oxidation Process ◽  
Fractal Approach ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

Effects of ultrasound on the evolution of plasma electrolytic oxidation process on 6061Al alloy

Ultrasonics ◽  
2014 ◽  
Vol 54 (4) ◽  
pp. 1065-1070 ◽  
Author(s):  
Dejiu Shen ◽  
Donglei He ◽  
Fangfei Liu ◽  
Changhong Guo ◽  
Jingrui Cai ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Oxidation Process ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic
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