Decreasing bio-degradation rate of the hydrothermal-synthesizing coated Mg alloy via pre-solid-solution treatment

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Abstract

In this study, we report an effective approach, pre-solid solution (SS) treatment, to reduce the in-vitro bio-degradation rate of the hydrothermal-synthesizing coated Mg-2Zn-Mn-Ca-Ce alloy in Hanks' solution. Pre-SS treatment alters the microstructure of alloys, which benefits the corrosion resistances of the substrate itself and the formed coating as well. The micro-galvanic corrosion between the secondary phase (cathode) and the α-Mg phase (anode) is relieved due to the reduction of the secondary phase. Meanwhile, coating formed on the SS-treated alloy was compacter than that on as-cast alloy, which provides better protection against initial corrosion.

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Song, D., Li, C., Zhang, L., Ma, X., Guo, G., Zhang, F., … Ma, A. (2017). Decreasing bio-degradation rate of the hydrothermal-synthesizing coated Mg alloy via pre-solid-solution treatment. Materials, 10(8). https://doi.org/10.3390/ma10080858

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