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化学学报
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化学学报 ›› 1990, Vol. 48 ›› Issue (7): 690-693. 上一篇    下一篇

研究论文

Li在液态Al中扩散系数的测定研究

张英珊;赵敏寿;唐定骧   

  1. 中国科学院长春应用化学研究所
  • 发布日期:1990-07-15

Study on measurement of diffusion coefficient of Li atom in liquid aluminium

ZHENG YINGSHAN;ZHAO MINSHOU;TANG DINGXIANG   

  • Published:1990-07-15

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首次尝试利用开路电位-浓度曲线法测定合金的浓度, 并用阳极计时电位法快速测定Li在液态Al中的扩散系数。720℃下Li在液态Al中的扩散系数DLi/Al=4.94×10ˉ^5cm^2·gˉ^1,与根据Stokes-Einstein方程计算得到的理论值DLi/Al=4.85×10ˉ^5cm^2·sˉ^1相吻合。

关键词: 浓度, 扩散系数, 电位, 铝合金, 曲线图, 液态金属对流换热, 电化学方法, 锂合金

The rest potential-concn. curve was first applied to measure the concentration of an alloy. Attempt to use the V-c curve of Al-Li alloy in measuring the diffusion coefficient of Li atom in liquid Al with anode chronopotentiometry at 720? was made and DLi/Al = 4.94 ?10-5 cm2.s-1 was obtained. The value is well consistent with the theor. value, DLi/Al = 4.85 ?10-5 cm2.s-1 in terms of Stokes-Einstein equation.

Key words: CONCENTRATION, DIFFUSION COEFFICIENTS, ELECTRIC POTENTIAL, ALUMINIUM ALLOYS, CURVED LINE DIAGRAM, LIQUID METAL HEAT CONVECTION, ELECTROCHEMICAL METHOD, LITHIUM ALLOYS

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