The high-temperature oxidation resistance properties of magnesium alloys alloyed with Gd and Ca

Effect of Ce addition on the high‐temperature oxidation resistance of Mg–Gd alloys

“…These Mg 12 Ce phases were mainly distributed along the grain boundaries, and internal oxidation occurred along the boundary during the oxidation process of Mg–3.5Gd–0.7Ce and Mg–3.5Gd–1Ce alloys (Figure 6d,e). [ 36 ] The Mg 12 Ce phases distributed along the grain boundary were likely to act as diffusion channels for oxygen ions and lead to the continuous internal oxidation of α‐Mg.…”

“…Wang et al [ 35 ] found that a dense oxide film formed on the surface of Mg–10Gd–3Y alloy. Wu et al [ 36 ] reported that alloying Ca with an Mg–Gd alloy produced a composite oxide film of CaO, Gd 2 O 3 , and MgO, which exhibited low oxidation rates at high temperatures.…”

Oxidation behavior of Mg-Gd binary alloys at elevated temperatures and the effect on corrosion property

“…Alloying has been proven to be an effective and convenient way to enhance the oxidation resistance of magnesium alloy. Several years ago, some researchers developed novel magnesium alloys by Be, Ca and rare earth (RE) elements [12][13][14][15]. Tan et al [16] reported that microalloys containing 60ppm Be, oxidation rate decreased significantly of AZ91 alloys when tested at 400 ºC.…”

Experimental evaluation of a silicone oil as an oxidation inhibitor for magnesium alloy under contact sliding at elevated temperatures

“…To this end, oxidation inhibition has been tried out. Generally, the suppression mechanism can be isolating Mg alloys from the environment, e.g., applying protective coatings [18,19] or adding reactive elements (RE) to the alloy to retard or inhibit possible oxidation [20,21].…”