有色金属科学与工程2023，Vol.14Issue(6)：802-807,6.DOI:10.13264/j.cnki.ysjskx.2023.06.007
LiF-CaF2-Yb2O3熔盐及Ni-Yb合金表面张力研究
Investigation of the surface tension of LiF-CaF2-Yb2O3 molten salt and Ni-Yb alloy
摘要
Abstract
The surface tension of the LiF-CaF2-Yb2O3 molten salt system is one of the key physical and chemical properties to optimize the preparation of Ni-Yb alloys by electrolysis.In this paper,the surface tension of the LiF-CaF2-Yb2O3 system was measured by the pulling cylinder method in the temperature range of 1 173 K to 1 523 K,its changing laws were analyzed,and the surface tension of the Ni-Yb alloy was estimated.The results showed that the surface tension of the LiF-CaF2 system decreased linearly with the increase of temperature in the range of 1 173 K to 1 573 K.The surface tension of the LiF-CaF2-Yb2O3 system also decreased with the increase of temperature in the range of 1 173 K to 1 573 K,while the surface tension of the LiF-CaF2-Yb2O3 system increased at first and then decreased with the increase of Yb2O3 concentration in the range of 1%to 4%(mass fraction).The surface tension of the LiF-CaF2-Yb2O3 system reached the highest value when the content of Yb2O3 was about 1%(mass fraction)in the LiF-CaF2 system.The surface tension of the liquid Yb-Ni alloy changed little with different components and temperatures.When the content of Yb is in the range of 0 to 0.10%(mole fraction),the surface tension of the Ni-Yb alloy is higher,so liquid Ni-Yb alloy easily separates from LiF-YbF3-Yb2O3 molten salt.关键词
熔盐/Ni-Yb合金/电解/表面张力/拉筒法Key words
molten salt/Ni-Yb alloy/electrolysis/surface tension/pulling cylinder method分类
矿业与冶金引用本文复制引用
张永健,蔡伯清,王旭,王瑞祥,石忠宁..LiF-CaF2-Yb2O3熔盐及Ni-Yb合金表面张力研究[J].有色金属科学与工程,2023,14(6):802-807,6.基金项目
国家自然科学基金资助项目(52074134,51864018) （52074134,51864018）
