用放射性同位素~(141)Ce及有机电解液低温电解法测定Ce在工业纯铝(A_1级)中的合金化量,并用电子探针,涂敷法自射线照相及自射线照相-扫描电镜法研究Ce在Al中的分布.实验结果表明,Al中的大部分Ce以合金化状态存在.Al中的Ce促使Si更多地富集于晶界.随着Ce含量的增加,Al中出现CeAl_4及Ce_5Si_3化合物,并在晶界出现共晶网组织.在退火与不退火的铸态铝中Ce在晶界与枝晶界有较明显的富集. The amount of alloying Ce in industrial pure aluminum (A_1 grade) was determined by radioactive isotope (141) Ce and low temperature electrolysis of organic electrolyte. Electron microprobe, The distribution of Ce in Al was studied.The experimental results show that most of the Ce in Al exists in the alloying state and Ce in Al contributes more to the grain boundary.With the increase of Ce content, And Ce_5Si_3 compounds, and the eutectic network appears in the grain boundary. In the annealed and unannealed aluminum in the grain boundary and dendritic more significant enrichment of Ce.