Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 4 (2017) 6697–6703 www.materialstoday.com/proceedings 2214-7853© 2017 Elsevier Ltd. All rights reserved. Selection andPeer-review under responsibility of the Conference Committee Members of International Conference and Expo on Magnesium (iMagCon2016). iMagCon2016 Tailoring Biodegradation of Fine Grained AZ31 Alloy Implants by Nanofibrous Coatings T. Hanas a,b , and T.S. Sampath Kumar a * 1. Introduction a Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai-600036, India. b School of Nano Science and Technology, National Institute of Technology Calicut, Calicut-673601, India Abstract Fine grained AZ31 magnesium alloy treated with HNO 3 was coated with electrospun polycaprolactone (PCL) nanofibres. Entire surface of the alloy was found to be coated with non-woven PCL nanofibrous mat with an average fiber diameter of 400 nm. The effect of coating on biodegradation and biomineralization of the samples were studied by immersion test conducted in supersaturated simulated body fluid (SBF 5×). The immersion test showed that the PCL coating reduced degradation rate. The surface of the immersed samples analyzed using scanning electron microscope (SEM) fitted with X-ray energy dispersive spectroscopy (EDS) confirmed that the PCL coating protects the surface from chloride ion attack and avoid pitting corrosion. Moreover the coated samples also had calcium phosphate (CaP) phases adhering on the surface which are essential for bone implant applications. Hence, nanofibrous PCL coating on fine grained AZ31 may be tried for degradable metallic implant applications to have a controlled degradation rate and enhancement of bioactivity. © 2017 Elsevier Ltd. All rights reserved. Selection andPeer-review under responsibility of the Conference Committee Members of International Conference and Expo on Magnesium (iMagCon2016). Keywords:Degradable implant; AZ31 magnesium alloys; Electrospinning; PCL nanofibres The biodegradability and mechanical properties similar to that of bone makes magnesium and its alloys a good choice for degradable metallic implant applications [1, 2]. However, the high reactivity of magnesium resulting in * Corresponding author. Tel.: +91-44-2257 4772; fax: + 91-44-2257 0545. E-mail address: tssk@iitm.ac.in