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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
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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. Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
  4. 4. Department of Anatomical Sciences and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
  5. 5. School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
  6. 6. School of Materials Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, United States
  7. 7. School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, United States
  8. 8. School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, United States

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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