【摘要】 利用交流阻抗法和连续改变电导池常数法在氮化硼毛细管中测量熔盐NdF₃-LiF、NdF₃-LiF-Nd₂O₃、NdF₃-LiF-Fe₂O₃和NdF₃-LiF-Nd₂O₃-Fe₂O₃的电导率,探究了温度和熔盐成分对电导率的影响。在1 100～1 200℃,NdF₃-LiF（NdF₃∶LiF=7∶3）与1%Nd₂O₃组成的熔盐电解质的电导率最为稳定。温度、Fe₂O₃和Nd₂O₃的质量百分比相同情况下,Fe₂O₃对NdF₃-LiF电导率的影响小于Nd₂O₃对NdF₃-LiF电导率的影响,并且Fe₂O₃和Nd₂O₃组合添加对NdF₃-LiF电导率的影响远大于Fe₂O₃或Nd₂O₃单独添加对NdF₃-LiF电导率的影响。1 200℃时,NdF₃-LiF-Nd₂O₃（1%～2%）-Fe₂O₃（1%～2%）的电导率相对稳定,Fe₂O₃含量对电导率的影响相对较小。在1 100～1 200℃,NdF₃-LiF（NdF₃∶LiF=9∶1）-Nd₂O₃（≤2%）-Fe₂O₃（≤2%）的电导率拟合公式为K=-2.71817+0.00615T-0.23978_xNd2O3-0.28133_xFe2O3。更多还原

【Abstract】 Alternating current（AC）impedance spectroscopy technique and continuously vary cell constant（CVCC）technique were used to measure the electrical conductivity of NdF₃-LiF,NdF₃-LiF-Nd₂O₃,NdF₃-LiF-Fe₂O₃ and NdF₃-LiF-Nd₂O₃-Fe₂O₃ molten salts in a boron nitride tube-type capillary cell.The effects of temperature and molten salt composition on the conductivity were investigated.The melts composed of NdF₃-LiF（NdF₃ ∶LiF of7∶3）with 1%Nd₂O₃ have shown the smallest conductivity variation in the temperature range of 1 100-1 200 ℃.Under the same weight percent of Fe₂O₃ or Nd₂O₃ and temperature,Fe₂O₃ has less effects on the electrical conductivity of NdF₃-LiF than that of Nd₂O₃,and the combination addition of Fe₂O₃ and Nd₂O₃ has resulted in the lowest conductivity than either addition of Fe₂O₃ or Nd₂O₃.The conductivity of NdF₃-LiF-Nd₂O₃（1%-2%）-Fe₂O₃（1%-2%）at 1 200℃is more stable,and the effects of Fe₂O₃ content on the conductivity at 1 200 ℃is relatively small.The conductivity fitting formula of NdF₃-LiF（NdF₃∶LiF of 9∶1）-Nd₂O₃（≤2%）-Fe₂O₃（≤2%）at 1 100-1 200℃ was also obtained:K =-2.71817+0.00615 T-0.23978_xNd2O3-0.28133_xFe2O3.更多还原