Increasing the Surface Functionality of Mg Alloys by Means of Plasma Electrolytic Oxidation

Lech Kwiatkowski; Anna Kapuścińska; Alicja Bałkowiec; Rafał Lutze

doi:10.4028/www.scientific.net/SSP.227.495

Paper Titles

Effect of the High Voltage Anodic Oxidation on the Titanium Corrosion Resistance
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Corrosion Resistance of Ti6Al7Nb Alloy after Various Surface Modifications
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Electrochemical Properties of cpTi with Modified Surface Used for Implants in Blood and Vascular System
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Impact of Surface Modification of Ti-6Al-7Nb Alloy on Electrochemical Properties in the Environment of Artificial Blood Plasma
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Increasing the Surface Functionality of Mg Alloys by Means of Plasma Electrolytic Oxidation
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Influence of Electrolytic Polishing and Anodic Passivation on Corrosion Resistance of Ti-15Mo Alloy
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Corrosion Behaviour of Thermodiffusion Coatings on Titanium Implants in Simulated Body Fluids
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Corrosion Behavior of a Novel Hybrid Co/UHMWPE Composite Biocoating with Potential Application as a Biomaterial
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Potential of Superhydrophobic Layer on the Implant Surface
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HomeSolid State PhenomenaSolid State Phenomena Vol. 227Increasing the Surface Functionality of Mg Alloys...

Increasing the Surface Functionality of Mg Alloys by Means of Plasma Electrolytic Oxidation

Abstract:

The aim of this work which is a part of larger approach, is the surface functionalization by means of plasma electrolytic oxidation (PEO) as a pretreatment prior to the application of biopolymer. The process was developed for the number of magnesium alloys, and AZ31, RZ5 and ZM21 in particular. An oxide layer was formed in two step consecutive process in KOH-Na₃PO₄ and KOH-NaF solutions. The coatings are built from sub-layers: reach in F at the metal-coating interface containing small pores and top layer with larger pores. An important feature for the surface biocompatibility is a presence and distribution of P within the top part of the coating which create a nucleation sites for the development of calcium phosphates. From the results of long term impedance measurements carried out in simulated body solution (SBF) at 37°C it may be concluded that the best corrosion protection is provided by the anodic layer formed on AZ31 alloy. After the testing the surface of alloys studied in this work was covered by a film of compounds containing calcium and phosphorus.

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Periodical:

Solid State Phenomena (Volume 227)

Pages:

495-498

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.227.495

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Online since:

January 2015

Authors:

Lech Kwiatkowski*, Anna Kapuścińska, Alicja Bałkowiec, Rafał Lutze

Keywords:

Chemical Composition, Coating Structure, Corrosion Resistance, Magnesium Alloy, Plasma Electrolytic Oxidation

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