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Effect of High Energy Ball Milling on the Properties of Biodegradable Nanostructured Fe-35 Wt.%Mn Alloy Publisher



Sotoudeh Bagha P1 ; Khakbiz M1 ; Safaie N2 ; Sheibani S3 ; Ebrahimibarough S4
Authors
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Authors Affiliations
  1. 1. Division of Biomedical Engineering, Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
  2. 2. Silicon Hall: Micro/Nano Manufacturing Facility, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Ontario, Canada
  3. 3. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
  4. 4. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Alloys and Compounds Published:2018


Abstract

In this study, nanostructured biodegradable Fe-35 wt.%Mn alloy prepared by 10 h high energy ball milling followed by conventional cold press and sintering. Structural and microstructural properties were studied by X-ray diffraction, optical microscopy, scanning electron microscopy and transmission electron microscopy. Corrosion rate, mechanical properties, biocompatibility and cell adhesion of this alloy were evaluated by SaOS-2 cell line and compared with the unmilled sample. Transmission electron microscopy proved the formation of the nanostructured alloy after sintering. The milled sample had the highest micro-hardness of 98 HV, while compression strength of the unmilled sample was higher. The ultimate compressive strength and strain of the unmilled sample were 153.4 MPa and 34%, respectively. Degradation by 60 days decreased both ultimate compressive strength and strain to 138 MPa and 31.5%, respectively. Lower corrosion rate observed for the milled sample was 1.36 mm/yr. On the other hand, the milled sample enhanced cell adhesion and cell viability evaluated by MTT assay. © 2018 Elsevier B.V.
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