Issue 12, 2023

Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

Abstract

Magnesium alloys have achieved a good balance between biocompatibility and mechanical properties, and have great potential for clinical application, and their performance as implant materials has been continuously improved in recent years. However, a high degradation rate of Mg alloys in a physiological environment remains a major limitation before clinical application. In this review, according to the human body's intake of elements, the current mainstream implanted magnesium alloy system is classified and discussed, and the corrosion mechanism of magnesium alloy in vivo and in vitro is described, including general corrosion, localized corrosion, pitting corrosion, and degradation of body fluid environment impact etc. The introduction of methods to improve the mechanical properties and biocorrosion resistance of magnesium alloys is divided into two parts: the alloying part mainly discusses the strengthening mechanisms of alloying elements, including grain refinement strengthening, solid solution strengthening, dislocation strengthening and precipitation strengthening etc.; the surface modification part introduces the ideas and applications of novel materials with excellent properties such as graphene and biomimetic materials in the development of functional coatings. Finally, the existing problems are summarized, and the future development direction is prospected.

Graphical abstract: Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

Article information

Article type
Review Article
Submitted
11 dez 2022
Accepted
01 mar 2023
First published
14 mar 2023
This article is Open Access
Creative Commons BY license

RSC Adv., 2023,13, 8427-8463

Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

L. Wei and Z. Gao, RSC Adv., 2023, 13, 8427 DOI: 10.1039/D2RA07829E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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