In this study, the corrosion behaviors of an as-extruded Mg–4%Zn–2%Y–1.8%Nd (in wt.%) alloy in different physiological saline solutions were investigated and compared. The results indicated that the alloy in the 9 g/L NaCl had the higher corrosion resistance than that containing with CaCl₂ and NaHCO₃. Moreover, it demonstrated that the corrosion behaviors of the alloy in two types of solutions were all dependent on the pre-immersion time. In the 9 g/L NaCl solution, the corrosion current densities of the alloy decreased firstly with the pre-immersion time being < 4 h and then increased with the pre-immersion time prolonging from 4 to 48 h. However, in the 9 g/L NaCl solution containing with CaCl₂ and NaHCO₃, the corrosion current density of the alloy exhibited the adverse trend with the prolonging the pre-immersion time. Failure analysis demonstrated that the changes of corrosion resistance in two solutions were mainly dominated by the constituents formed in surface films.

在这项研究中，研究并比较了挤压后的Mg–4％Zn–2％Y–1.8％Nd（按重量％）合金在不同生理盐溶液中的腐蚀行为。结果表明，在9 g / L NaCl中，该合金具有比在CaCl ₂和NaHCO ₃中所含的合金更高的耐蚀性。此外，这表明合金在两种溶液中的腐蚀行为都取决于预浸时间。在9 g / L NaCl溶液中，合金的腐蚀电流密度在预浸时间<4 h时先降低，然后在预浸时间从4 h延长到48 h时增加。但是，在含有CaCl ₂和NaHCO ₃的9 g / L NaCl溶液中，随着预浸时间的延长，合金的腐蚀电流密度呈现出不利的趋势。失效分析表明，两种溶液的耐蚀性变化主要由表面膜中形成的成分决定。