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Electrophoretic Deposition of Bioactive Glass Nanopowders on Magnesium Based Alloy for Biomedical Applications Publisher



Rojaee R1, 3 ; Fathi M1, 3 ; Raeissi K2 ; Taherian M3
Authors
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Authors Affiliations
  1. 1. Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
  2. 2. Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
  3. 3. Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Ceramics International Published:2014


Abstract

To slow down the initial biodegradation rate of magnesium (Mg) alloy, crystalline nano-sized bioactive glass coating was used to deposit on micro-arc oxidized AZ91 samples via electrophoretic deposition (EPD). Zeta potential and conductivity of the bioactive glass suspension were characterized at various pH values to identify the most stable dispersion conditions. The bone-bonding properties of bioactive glass coated samples were evaluated in terms of apatite-forming ability during the immersion in simulated body fluid (SBF) solution. Results revealed that the ability to form a bioactive glass coating via EPD was influenced by the degree of its crystalline phase composition. Moreover, the potentiodynamic polarization tests recorded significant drops in corrosion current density and corrosion rate of the coated samples which implies a good level of corrosion protective behavior. These preliminary results show that this process will enable the development of Mg implants in the later stage of bone healing. © 2013 Elsevier Ltd and Techna Group S.r.l.
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