Abstract The addition of trace La significantly affected the properties of the Al–Zn–Si coating. Adding La improved the corrosion resistance of the coating. More importantly, it restrained the nucleation of α-Al dendrites consequently leading to coarser grains. Based on the density functional theory calculations, we found that the doping concentration was important to the spontaneous nucleation of the heterogeneous nucleus in liquid metal, and there should be a transition between homogeneous nucleation and heterogeneous nucleation.

中文翻译：

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La掺杂对Al-Zn-Si涂层中α-Al形核的讨论

摘要 微量La的添加显着影响了Al-Zn-Si涂层的性能。添加La提高了涂层的耐腐蚀性。更重要的是，它抑制了 α-Al 枝晶的形核，从而导致晶粒粗大。基于密度泛函理论计算，我们发现掺杂浓度对液态金属中异质核的自发成核很重要，均质成核和异质成核之间应该存在过渡。