稀土在镁及镁合金中的应用

Application of Rare Earth in Magnesium and Magnesium Alloys

稀土以其特殊的物理化学性质在冶金及材料领域有着广泛的应用。本文主要综述了稀土元素在镁及镁合金熔炼过程中除氢、减少氧化夹杂、阻燃的应用,以及稀土元素对镁合金微观组织结构的细化、高温力学性能的改善和耐蚀性能提高等方面的作用和机理。

Rare earth has been widely used in metallurgy and material fields for its special physical chemistry properties. In this article, the effects of rare earth during the process of magnesium and magnesium alloys melting, including eliminating hydrogen, deoxygenating oxides e and preventing ignition are introduced, the influence and the correlative mechanisms of rare earth in refining the microstructures of magnesium, improving its mechanical properties at elevated temperature and corrosion resistance are also reviewed.