Influence of mixed rare earth elements(Y and Ce) on the microstructure and corrosion behaviour of Mg-4Al-3Ca alloy

In-situ grown super- or hydrophobic Mg-Al layered double hydroxides films on the anodized magnesium alloy to improve corrosion properties

“…One is the metallurgical way, such as purification of Mg alloys [5], homogenization of microstructure [6] and addition of rare earth elements [7]. However, the protection against general corrosion and galvanic corrosion remains a great challenge by simple alloy development.…”

Effect of aging treatment on corrosion behavior of Mg-4Nd-2Gd-0.5Zr alloy

“…Among the structure metal materials, magnesium alloy has been widely used in automobile industry, electronics, aerospace and other fields because of its excellent specific stiffness and specific strength, but low strength and poor corrosion resistance limit the wider application of magnesium alloy. Adding rare earth elements to pure magnesium can improve the microstructure, fine grain size and remove S, Fe and other impurities, so RE elements can effectively improve the mechanical properties and corrosion resistance of magnesium alloy [1][2][3]. RE element can also change the structure of corrosion film of magnesium alloy.…”

Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

“…They also found that surface oxide films containing Mg and RE can provide desired corrosion resistance to Mg alloys. Hu et al [26] surveyed the microstructure and corrosion behavior of Mg-4Al-3Ca alloy after adding mixed Y and Ce. The results indicated that adding the mixture of Y and Ce to Mg-4Al-3Ca alloy refined the thick strip (Mg, Al) 2 Ca phase and changed the continuity of the (Mg, Al) 2 Ca phase, and the newly obtained distributed granular Al-RE phase formed a barrier layer in the matrix.…”