Abstract : the paper discusses the forming reasons of magnesia which is the main non - metallic inclusions in rare earth magnesium ferrosil icon alloy and harmful . the methods of reducing magnesia in the alloy have been p roposed 文摘:本文论述了稀土镁硅铁合金中主要非金属夹杂物?氧化镁的生成原因及其对应用的危害，提出了降低合金中氧化镁的方法。
