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Surface Modification of Magnesium Alloy Implants by Nanostructured Bredigite Coating Publisher



Razavi M1, 3, 4, 6 ; Fathi M1, 2 ; Savabi O3 ; Mohammad Razavi S4 ; Hashemi Beni B5 ; Vashaee D7 ; Tayebi L6, 8
Authors

Source: Materials Letters Published:2013


Abstract

Magnesium and its alloys have been recently investigated as biodegradable metallic biomaterials for bone implants. However, rapid corrosion rate and low bioactivity have been two limiting factors for their biomedical applications. In this work we aimed to improve these two properties for AZ91 magnesium alloy using the nanostructured bredigite (Ca7MgSi4O 16) coating made by micro-arc oxidation and electrophoretic deposition methods. The results indicated that this surface treatment enhanced both corrosion resistance and the bioactivity of AZ91 substrate, making it suitable for biomedical applications.
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