(大连理工大学 材料工程系， 大连 116023)
摘 要: 研究了稀土元素对工业纯铝导电性的影响。结果表明：混合稀土对工业纯铝的导电性没有改善作用；在一定的数量范围内纯稀土元素镧、铈的加入，对铝的常温导电性有一定的改善作用，高温时则使铝的电阻率略微上升。还对镧、铈降低铝常温电阻率的机理作了初步的探讨。
关键字: 稀土元素； 工业纯铝； 导电性； 电阻率
（Department of Materials Engineering, Dalian University of Technology， Dalian 116023, P.R.China）
Abstract:The effects of rare earth elements Ce, La and MRe on electrical conductivity of industrial aluminum were studied. The results indicate that the mixed rare earth element can't cause the improvement of electrical conductivity of aluminum. The addition of the pure La and Ce in industrial aluminum can decrease the electrical resistivity of aluminum and increase its temperature coefficient of electrical resistivity. Themechanism of pure rare earth elements improving electrical conductivity of industrial aluminum was also discussed.
Key words: rare earth elements； industrial aluminum； electrical conductivity； electrical resistivity
