Surface microstructure and in vitro analysis of nanostructured akermanite (Ca2MgSi2O7) coating on biodegradable magnesium alloy for biomedical applications.
Magnesium (Mg) alloys, owing to their biodegradability and good mechanical properties, have potential applications as biodegradable orthopedic implants. However, several poor properties including low corrosion resistance, mechanical stability and cytocompatibility have prevented their clinical application, as these properties may result in the sudden failure of the implants during the bone healing. In this research, nanostructured akermanite (Ca2MgSi2O7) powder was coated on the AZ91 Mg alloy through electrophoretic deposition (EPD) assisted micro arc oxidation (MAO) method to modify the properties of the alloy. The surface microstructure of coating, corrosion resistance, mechanical stability and cytocompatibility of the samples were characterized with different techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electrochemical corrosion test, immersion test, compression test and cell culture test. The results showed that the nanostructured akermanite coating can improve the corrosion resistance, mechanical stability and cytocompatibility of the biodegradable Mg alloy making it a promising material to be used as biodegradable bone implants for orthopedic applications.
Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran; Department of Anatomical Sciences and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran; School of Materials Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, USA; School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, USA. Electronic address: m.razavi@ma.iut.ac.ir.
Mehdi
M
Razavi
Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Dental Materials Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Mohammadhossein
M
Fathi
Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran.
Omid
O
Savabi
Department of Anatomical Sciences and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran.
Batoul
B
Hashemi Beni
School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, USA.
Daryoosh
D
Vashaee
School of Materials Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, OK 74106, USA; School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA. Electronic address: lobat.tayebi@okstate.edu.
Lobat
L
Tayebi
D000497:Alloys / Q000494:pharmacology*; D000818:Animals; D020811:Biomedical Technology / Q000379:methods*; D002470:Cell Survival / Q000187:drug effects; D002516:Ceramics / Q000737:chemistry* / Q000494:pharmacology*; D020099:Coated Materials, Biocompatible / Q000737:chemistry / Q000494:pharmacology*; D019245:Compressive Strength / Q000187:drug effects; D058266:Dielectric Spectroscopy; D055664:Electrochemical Techniques; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects / Q000648:ultrastructure; D007477:Ions; D008274:Magnesium / Q000494:pharmacology*; D051379:Mice; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction / Q000187:drug effects; D013499:Surface Properties; D014961:X-Ray Diffraction
D000497:Alloys; D020099:Coated Materials, Biocompatible; D007477:Ions; C023506:Glass ceramics; D008274:Magnesium
Akermanite coating; Biodegradable Mg alloy; Corrosion; Cytocompatibility