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Biodegradable Magnesium Alloy Coated by Fluoridated Hydroxyapatite Using Mao/Epd Technique Publisher



Razavi M1, 3, 4, 5 ; Fathi M1, 2 ; Savabi O3 ; Vashaee D5 ; Tayebi L4, 6
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. School of Materials Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, United States
  5. 5. School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, United States
  6. 6. School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, United States

Source: Surface Engineering Published:2014


Abstract

In this paper, a nanostructured fluoridated hydroxyapatite (FHA) coating was used on AZ91 magnesium to improve its corrosion resistance and in vitro bioactivity. The coating was made through micro arc oxidation (MAO) and electrophoretic deposition (EPD) method. After characterising phase composition and surface morphology, the corrosion and the in vitro bioactivity behaviours of the coated materials were investigated by electrochemical measurements and immersion tests in simulated body fluid (SBF). The results confirmed the enhancement of the corrosion resistance and the bioactivity of the AZ91 alloy coated with nanostructured FHA. Therefore, the surface treatment introduced in this paper may be an apt approach to make magnesium alloys more suitable for orthopedic applications. © 2014 Institute of Materials, Minerals and Mining.
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