Growth of aluminum-free porous oxide layers on titanium and its alloys Ti-6Al-4V and Ti-6Al-7Nb by micro-arc oxidation

2014 ◽  
Vol 41 ◽  
pp. 343-348 ◽  
Author(s):  
Laís T. Duarte ◽  
Claudemiro Bolfarini ◽  
Sonia R. Biaggio ◽  
Romeu C. Rocha-Filho ◽  
Pedro A.P. Nascente
Keyword(s):  
Oxide Layers ◽  
Micro Arc Oxidation ◽  
Porous Oxide

Preparation of porous oxide layers by oxygen bubble templated anodic deposition followed by galvanic displacement

2017 ◽  
Vol 253 ◽  
pp. 11-20 ◽  
Author(s):  
Nicola Comisso ◽  
Lidia Armelao ◽  
Sandro Cattarin ◽  
Paolo Guerriero ◽  
Luca Mattarozzi ◽  
...  
Keyword(s):  
Galvanic Displacement ◽  
Oxide Layers ◽  
Oxygen Bubble ◽  
Porous Oxide ◽  
Anodic Deposition

scholarly journals Synthesis of novel oxide layers on titanium by combination of sputter deposition and micro-arc oxidation techniques

2011 ◽  
Vol 30 (5) ◽  
pp. 754-761 ◽  
Author(s):  
Myat NYAN ◽  
Yusuke TSUTSUMI ◽  
Kei OYA ◽  
Hisashi DOI ◽  
Naoyuki NOMURA ◽  
...  
Keyword(s):  
Sputter Deposition ◽  
Oxide Layers ◽  
Micro Arc Oxidation

Ceramic Coatings of Magnesium Alloy for Biomaterial Applications

2010 ◽  
Vol 434-435 ◽  
pp. 634-637 ◽  
Author(s):  
Pu Liang Zhang ◽  
Bin Liu ◽  
Dong Zhang ◽  
Yong Wei Tao ◽  
Sheng Rong Yang ◽  
...  
Keyword(s):  
Body Fluid ◽  
Ceramic Coatings ◽  
Alkaline Treatment ◽  
Mg Alloy ◽  
X Ray Diffraction ◽  
Electrodeposition Technique ◽  
Corrosion Properties ◽  
X Ray ◽  
Micro Arc Oxidation ◽  
Porous Oxide

Ceramic coatings were produced on magnesium (Mg) alloy of AZ91D for biomaterial applications by micro-arc oxidation (MAO) and electrodeposition methods. The morphology, microstructure, phase composition and corrosion properties of the prepared coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and potentiodynamic polarization tester, etc. The results indicated that a porous oxide layer was grown on the Mg alloy sheets after MAO process and the compositions of oxides were mainly Mg2SiO4 and MgO. After further electrodeposition and alkaline treatment, a flake-like structure diverging from centre to periphery was grown on the MAO coating and the coating was mainly made up of hydroxyapatite (HA). Moreover, the corrosion resistance of the Mg alloy after being treated with MAO and electrodeposition technique increases obviously, which was evaluated in stimulated body fluid (SBF).

scholarly journals Corrosion Behavior of Anodic Self-Ordered Porous Oxide Layers on Stainless Steel

2021 ◽  
Vol 168 (2) ◽  
pp. 021507
Author(s):  
Lucia Helena Prado ◽  
Evangelia Anastasiou ◽  
Sannakaisa Virtanen
Keyword(s):  
Stainless Steel ◽  
Corrosion Behavior ◽  
Oxide Layers ◽  
Porous Oxide ◽  
Ordered Porous

scholarly journals Effect of strontium ions on calcification of preosteoblasts cultured on porous calcium- and phosphate-containing titanium oxide layers formed by micro-arc oxidation

2016 ◽  
Vol 35 (4) ◽  
pp. 627-634 ◽  
Author(s):  
Mizuki SATO ◽  
Peng CHEN ◽  
Yusuke TSUTSUMI ◽  
Makoto SHIOTA ◽  
Takao HANAWA ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Oxide Layers ◽  
Micro Arc Oxidation ◽  
Strontium Ions

Synthesis of a porous oxide layer on a multifunctional biomedical titanium by micro-arc oxidation

2009 ◽  
Vol 29 (6) ◽  
pp. 1923-1934 ◽  
Author(s):  
X.J. Tao ◽  
S.J. Li ◽  
C.Y. Zheng ◽  
J. Fu ◽  
Z. Guo ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Micro Arc Oxidation ◽  
Porous Oxide

Controlled synthesis of multifunctional coatings by micro-arc oxidation method

2022 ◽  
Vol 13 (1) ◽  
pp. 0-0
Keyword(s):  
Protective Coatings ◽  
Electrical Circuit ◽  
Automated System ◽  
Controlled Synthesis ◽  
Regression Equations ◽  
Technological Parameters ◽  
Oxide Layers ◽  
Oxidation Method ◽  
Micro Arc Oxidation

The article is devoted to the development of the methodology for the controlled synthesis of protective coatings by the micro-arc oxidation method in order to improve the efficiency of this technology and the quality of the obtained oxide layers. Methodology includes a mathematical model of a galvanic cell based on an equivalent electrical circuit, as well as a model of the interconnections between the technological parameters of the micro-arc oxidation (MAO) process and the properties of the obtained oxide layers based on graph theory. The indicated dependences are formalized using methods of regression and correlation analysis of experimental data. A technique for the controlled synthesis of MAO coatings using the obtained regression equations is proposed. The structure and functioning algorithm of an intelligent automated system for the controlled synthesis of MAO coatings are developed. A prototype of this system was used to obtain experimental dependences of reaction parameters on the influence parameters of the micro-arc oxidation process.

Anti-Bacterial Microporous Ceramic Coating for Ti6Al4V Alloys

2011 ◽  
Vol 493-494 ◽  
pp. 916-919
Author(s):  
Ahmet Aral ◽  
M. Gunyuz ◽  
Murat Baydogan ◽  
Nevin Gul Karaguler ◽  
Ercan Olcay ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Oxide Layer ◽  
Ceramic Coating ◽  
Oxidation Process ◽  
Wide Spectrum ◽  
Ti6al4v Alloy ◽  
Surface Samples ◽  
Micro Arc Oxidation ◽  
Porous Oxide

In this study, micro porous oxide layer was formed on a Ti6Al4V alloy by the micro arc oxidation process in an electrolyte containing (CH3COO)2CaH2O + Na3PO4 with appropriate amount of silver containing agent. A wide spectrum antibiotic was also applied to the surface. Samples were subjected to antimicrobial activity tests in accordance with JIS Z 2801 standard against E.coli and the results were compared with those of original Ti6Al4V sample. First experimental results presented here showed that the micro arc oxidation process improve the antibacterial activity of Ti6Al4V alloy surface and further improvement could be obtained upon antibiotic application in addition to the micro arc oxidation process.

The Effect of Oxidized Time to Structure and Composition of Micro-Arc Oxidization Ceramic Coating of Pure Titanium

2016 ◽  
Vol 852 ◽  
pp. 984-991
Author(s):  
Lin Xu ◽  
Jian Ning Ding ◽  
Zhen Huang ◽  
Ni Na Han ◽  
Xiao Jing Xu ◽  
...  
Keyword(s):  
Ceramic Coating ◽  
Pure Titanium ◽  
Relative Content ◽  
X Ray Diffraction ◽  
X Ray ◽  
Opposite Trend ◽  
Micro Arc Oxidation ◽  
Porous Oxide ◽  
3D Profilometer ◽  
Scanning Electron

The porous oxide TiO2 ceramic coating containing Ca and P is fabricated on the surface of pure titanium in the electrolyte of C4H6CaO4-NaH2PO4 by micro-arc oxidation (MAO) method. Scanning electron microscopy (SEM) and 3D profilometer are used to observe difference between morphology of coating surface under condition of different oxidized time. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) are used to discuss the effect of oxidized time to the ratio of Ca/P and phase composition of ceramic coating. Results indicate that the oxidized time has a little effect on structure and composition of MAO ceramic coating of pure titanium. After modified with MAO, pure titanium is rough and porous on its surface, its average aperture, porosity and roughness enlarge as oxidized time extends. The increase of oxidized time makes the ratio of Ca/P and the relative content of rutile TiO2 increases, but the relative content of anatase TiO2 shows opposite trend.

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