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

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.

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

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).

Densification Behavior and Microstructure Evolution of Laser Surface Melting Processed Silicon-Containing Micro Arc Oxidation Coating

2014 ◽  
Vol 941-944 ◽  
pp. 1650-1653
Author(s):  
Jie Yu ◽  
Shi Chun Di ◽  
Yan Wang ◽  
Peng Xiang Lv ◽  
Jun Jie Yang
Keyword(s):  
Oxide Layer ◽  
Microstructure Evolution ◽  
Smooth Surface ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Temperature Threshold ◽  
Heat Sources ◽  
Densification Behavior ◽  
Micro Arc Oxidation

The present work investigated the effect of laser surface melting (LSM) process on micro arc oxidation (MAO) coating prepared in silicate electrolytes (Si-MAO) and aluminate electrolytes (Al-MAO). Plasma intensity of laser spots, element content and phase constituents of coatings were analyzed. During LSM remelting process, the formation of heat sources and micro molten pools on the surface of MAO coating were discussed. The results showed that the moderate plasma was formed more easily on the Si-MAO than Al-MAO coating, owing to the temperature threshold of melting oxide layer was decreased for silicon-containing MAO coating during LSM treatment. Besides, the Si-MAO coating of laser-treated had low porosity and smooth surface.

scholarly journals Influence of Electrolytical Oxidising of Silumine Surfaces on the Quality of Bonding with Epoxy Resin

2016 ◽  
Vol 61 (3) ◽  
pp. 1601-1606
Author(s):  
A. Posmyk ◽  
M. Cholewa ◽  
J. Wieczorek ◽  
D. Scelina
Keyword(s):  
Epoxy Resin ◽  
Oxide Layer ◽  
Negative Electrode ◽  
Adhesive Bond ◽  
Uniform Structure ◽  
3 Dimensional ◽  
Porous Oxide ◽  
Anodic Oxidation Method ◽  
Aluminum Alloy Surface

Abstract The article presents the preparation process of AC-AlSi12 aluminum alloy surface by application of anodic oxidation method. The method enables the formation of a porous oxide layer (Al2O3) which generates the substrate of durable adhesive bond with an epoxy resin. It also presents the influence of the form of silicon precipitates in the modified alloy upon anodizing process, uniform structure and thickness of the oxide layer as well as the topography of its surface which is expected to improve adhesion of the resin and silumin. The paper describes how the position of oxidized surface against the negative electrode influences the coating structure. The studied silumins are intended to form the material for casting of 3 dimensional objects whose parts will change the distribution of electric field strength that may cause non-uniform structure of the coating.

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