Abstract
Mg and Mg alloys have been studied for almost two centuries; nevertheless, commercial biomedical devices are still not available. The main issue that limits their use in the biomedical field is the rapid degradation rate combined with suitable surface properties. Novel approaches need to be designed for the development of biodegradable Mg-based devices, which could include the use of multifunctional coatings and/or new alloys designed “ad hoc”. The present article reviews on various properties, parameters and improvement methods concerning plasma electrolytic oxidation (PEO) coatings on Mg alloys substrates for biomedical applications. In this regard, (i) optimizing the PEO parameters, (ii) using additives and nanoparticles, (iii) creating combined layers of hard and/or soft particles, (iv) coating the PEO layer with a biodegradable polymer, could be the way to control their degradation rate. The review of recent scientific articles highlights that none of the techniques proposed may be preferred over the others and the need to deepen the studies for allowing the use of Mg-based devices in the biomedical field.
Highlights
It is well known that magnesium and magnesium alloys possess remarkable functional properties such as low density, high strength to weight ratio, good thermal and electrical conductivity, proper castability, good machining, and biocompatibility
In particular. the high reactivity has limited their use in several industrial fields, due to the resulting high degradation rate when exposed to ambient or aggressive environments
The causeThe of formation the holes the low-temperature electrolyte and the following quenching of the melts is supposed to the process duration and discharge density are two main factors that affect the size of the pores, andbe some cause of formation of the holes process durationbetween and discharge are two main researches showed that pore diameter in Mg alloys is typically
Summary
It is well known that magnesium and magnesium alloys possess remarkable functional properties such as low density, high strength to weight ratio, good thermal and electrical conductivity, proper castability, good machining, and biocompatibility Their use in various industries such as automotive, aerospace, entertainment and more recently in the bio-medical field is increasing [1,2]. The traditional medical devices, made of Ti alloy or other metallic materials, often require a surgery to be removed after the tissue has been healed. Both imposing high costs to the medical system and complications for the patient From this point of the biodegradability of Mg alloy devices is an added value in some biomedical applications.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
