Effect of solid solution Zn atoms on corrosion behaviors of Mg-2Nd-2Zn alloys

Sun, Lingxiong; Dong, Ningning; Wang, Jinghui; Hai, Ma; Jin, Peipeng; Peng, Yong

doi:10.1016/j.corsci.2021.110023

Cited by 39 publications

(1 citation statement)

References 34 publications

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“…From the high-magnification SEM images as shown in figures 9(d)-(f) and (j)-(l), it is obviously observed that the corrosion products of the as-extruded alloy sample exhibit a needle-like morphology and are relatively dense after 24 h of immersion. It is reported that these needle-like corrosion products are likely to be Mg 2 Cl(OH) 3 •4H 2 O passivation film, which provides a more effective protective passivation film compared to that of Mg(OH) 2 [42]. When this film is damaged, the corrosion resistance of the alloy decreases.…”

Section: Corrosion Behaviors Of Mg-4al-6er-03mn Alloymentioning

confidence: 99%

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

Liang,

Ma,

Qin

et al. 2024

Mater. Res. Express

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The Mg-Al alloys exhibit poor corrosion resistance when they exposed to Cl- attack. To solve this problem, Erbium (Er) and Manganese (Mn) are added to the Mg-4Al alloy and the Mg-4Al-6Er-0.3Mn is T4 treated to enhance the corrosion resistance of the alloy. Then the corrosion behaviors of the as-extruded alloy and the T4 alloy are investigated in this paper. It is found that the effective cathode Mg17Al12 is significantly reduced in the alloy due to the precipitation of Mg17Al12 being suppressed by Al2Er and the dissolution of the Mg17Al12 in the alloy. It is observed that the corrosion products transform from needle-like to tetrahedral-shaped corrosion products during the transformation process, which leads to severe pit corrosion. The results show that the T4 treatment can delay the transformation of the morphologies of the corrosion products, thereby improved the alloy corrosion resistance during the early stages of corrosion.

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Section: Corrosion Behaviors Of Mg-4al-6er-03mn Alloymentioning

confidence: 99%