Promising Methods for Corrosion Protection of Magnesium Alloys in the Case of Mg-Al, Mg-Mn-Ce and Mg-Zn-Zr: A Recent Progress Review

Abstract

High specific strength characteristics make magnesium alloys widely demanded in many industrial applications such as aviation, astronautics, military, automotive, bio-medicine, energy, etc. However, the high chemical reactivity of magnesium alloys significantly limits their applicability in aggressive environments. Therefore, the development of effective technology for corrosion protection is an urgent task to ensure the use of magnesium-containing structures in various fields of application. The present paper is aimed to provide a short review of recent achievements in corrosion protection of magnesium alloys, both surface treatments and coatings, with particular focus on Mg-Al-Mn-Ce, Mg-Al-Zn-Mn and Mg-Zn-Zr alloys, because of their wide application in the transport industry. Recent progress was made during the last decade in the development of protective coatings (metals, ceramics, organic/polymer, both single layers and multilayer systems) fabricated by different deposition techniques such as anodization, physical vapour deposition, laser processes and plasma electrolytic oxidation.

Corrosion and protection of friction stir welding of magnesium alloy

“…Coatings are essential for corrosion protection because they provide physical barriers that prevent aggressive substances from entering the metal substrate or inhibit the corrosion process (Predko et al , 2021). Applying metal coating onto the surface of magnesium alloy through chemical plating or electroplating can noticeably enhance the corrosion resistance, wear performance, as well as the surface appearance of substrate.…”

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

“…Efforts to enhance the corrosion resistance of magnesium alloys involve various techniques such as heat treatment [27][28][29], alloying with elements [9], and surface modification [30][31][32][33]. Surface modifications can improve corrosion resistance and durability effectively, while it can be complex, damage the matrix and potentially impact dimensional tolerances.…”

A comparative study and optimization of corrosion resistance of Mg–Al layered double hydroxides films at different hydrothermal temperatures on LA103Z Mg–Li alloy

“…[ 4,5 ] However, due to their high electrochemical activity, particularly in environments and solutions containing Cl − , where they are vulnerable to the aggression of Cl − , magnesium alloys have poor corrosion resistance, which severely restricts their use and development in a variety of fields. [ 6–8 ] Improved magnesium alloy corrosion resistance is, therefore, necessary immediately. Several anticorrosion approaches for Mg alloys have been established so far, including organic coating, [ 9–11 ] chemical conversion film, [ 12–14 ] micro‐arc oxidation, [ 15,16 ] layered double hydroxide (LDH), [ 17 ] electroplating and chemical plating.…”

“…development in a variety of fields. [6][7][8] Improved magnesium alloy corrosion resistance is, therefore, necessary immediately. Several anticorrosion approaches for Mg alloys have been established so far, including organic coating, [9][10][11] chemical conversion film, [12][13][14] micro-arc oxidation, [15,16] layered double hydroxide (LDH), [17] electroplating and chemical plating.…”