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Synthesis and corrosion behavior of a hybrid bioceramic-biopolymer coating on biodegradable Mg alloy for orthopaedic implants

Bakhsheshi-Rad, Hamid Reza and Hamzah, Esah and Ismail, Ahmad F. and Sharer, Zalilah Sharer and Abdul Kadir, Mohammed Rafiq and Daroonparvar, Mohammadreza R. and Saud, Safaa Najah and Medraj, Mamoun (2015) Synthesis and corrosion behavior of a hybrid bioceramic-biopolymer coating on biodegradable Mg alloy for orthopaedic implants. Journal Of Alloys And Compounds, 648 . pp. 1067-1071. ISSN 0925-8388

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Official URL: http://dx.doi.org/10.1016/j.jallcom.2015.07.075

Abstract

A composite coating composed of octacalcium phosphate (OCP) and hydroxyapatite (HA) as an underlayer and polycaprolactone (PCL) as an overlayer was fabricated on an Mg-1.2Ca-2Zn alloy via combination of chemical solution deposition and dip coating methods. The overlayer was composed of a pore network structure with thickness around 38 µm but the underlayer consisted of plate-like crystals with inner dense layer (1.2 µm) and an outer coarse layer (6 µm). The corrosion current densities of Mg alloy significantly decreased after composite coating from 211.6 to 0.059 µA/cm2. Hence, the PCL/OCP/HA composite coating can effectively protect the Mg-1.2Ca-2Zn alloy when used as degradable orthopaedic implants.

Item Type:Article
Uncontrolled Keywords:biodegradable, corrosion, magnesium, octacalcium phosphate, polycaprolactone
Subjects:A General Works
ID Code:58862
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:20 Sep 2017 09:56

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