在工业纯铝及铝镁合金制品中加入少量稀土合金可以提高其机械性能与抗腐蚀性能,但稀土的作用机理则不甚清楚。本文用放射性测量方法测定了铝及铝镁合金中铈之合金化量,用电子探针及涂层法自射线照相研究了铈在其中的分布。 实验分别将工业纯铝(含Si 0.15％、Fe 0.14％)与铝镁合金(含Si 0.14％、Fe 0.32％、 In industrial pure aluminum and aluminum-magnesium alloy products by adding a small amount of rare earth alloy can improve its mechanical properties and corrosion resistance, but the mechanism of rare earth is not clear. In this paper, the amount of alloying cerium in aluminum and aluminum-magnesium alloy was measured by radioactive method. The distribution of cerium in the sample was studied by electron probe and coating method. Experimentally, commercial pure aluminum (including Si 0.15%, Fe 0.14%) and Al-Mg alloy (containing Si 0.14%, Fe 0.32%