Density Impacts of LiF-DyF3-Cu2O-Dy2O3 Molten Salt System

被引：0
|
作者：
Liao C. [1 ]
Chen S. [1 ,2 ]
Wang X. [1 ]
Cai B. [1 ]
Jiao Y. [1 ]
Zeng Y. [1 ]
机构：
[1] Institute of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou
[2] Ganzhou Nonferrous Metallurgy Research Institute, Ganzhou
来源：
Xiyou Jinshu/Chinese Journal of Rare Metals | 2019年 / 43卷 / 03期
关键词：
Cu[!sub]2[!/sub]O; Density; Dy-Cu intermediate alloy; Dy[!sub]2[!/sub]O[!sub]3[!/sub; Molten salt;
D O I：
10.13373/j.cnki.cjrm.XY18040005
中图分类号：
学科分类号：
摘要：
In order to further optimize the electrolysis process parameters for preparing Dy-Cu intermediate alloy in LiF-DyF3-Dy2O3-Cu2O molten salt, the density of LiF-DyF3-Dy2O3-Cu2O molten salt system was determined by Archimedes method. The effects of temperature, single oxide (Dy2O3 or Cu2O) and mixed oxides (Dy2O3 and Cu2O) on the density of molten salt system were investigated. The mathematical model of density was established by least-squares fitting data. The regression equation between temperature, Dy2O3 content, Cu2O content and molten salt density was determined. The results showed that the density of molten salt system decreases regularly with the increase of temperature, and increases with the addition of a single oxide, the addition of mixed oxides and the ratio of wDy2O3 to wCu2O in mixed oxidation. The relationship among temperature (t), Dy2O3 addition amount wDy2O3, Cu2O addition amount wCu2O and molten salt density (ρ) could be expressed as ρ=-7.01813-0.00163t+0.01832 wDy2O3+0.10289wCu2O at a temperature of 910 to 1030℃, wDy2O3 of 0% to 2.0% (mass fraction), and wCu2O of 0% to 2.0% (mass fraction). From the perspective of melt density, the optimal electrolysis conditions for preparing Dy-Cu alloy in LiF-DyF3-Dy2O3-Cu2O molten salt were 2.0%≤wDy2O3+wCu2O≤3.0% (mass fraction), wDy2O3:wCu2O<3:2, the electrolysis temperature was in the range of 960 to 980℃. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
引用
收藏
页码：296 / 302
页数：6
相关论文
共 28 条
  • [1] Zhang J., Xie B., Zhao L.Z., Hu Y., Research development and strengthening way of high-strength and high-conductivity copper alloys, Hot Working Technology, 43, 14, (2014)
  • [2] Wen Q.Y., Study status and applications of preparation methods of high strength and high conductivity copper alloy, Metal Materials and Metallurgy Engineering, 45, 3, (2017)
  • [3] Zhang J.G., Wang L.M., Zhang S.M., Wang L.S., Zhang J.H., The copper and copper alloy powders application and research status, Powder Metallurgy Industry, 23, 1, (2013)
  • [4] Wang T.G., Qin Q., Liang Q.C., Effect of rare earth element La content on trobological properties of copper-based powder metallurgy friction materials, Lubrication Engineering, 41, 4, (2016)
  • [5] Li Q., Ma B., Huang G.J., Xie S.S., Research progress and prospects of effect of rare earth on high-strength high-conductivity copper alloy, Hot Working Technology, 40, 2, (2011)
  • [6] Zhang S.H., Chen Y., Li H.H., Wu J.H., Liu J.S., Thermodynamic calculation and industrial application of rare earth removing impurities and microalloying in impure red-coppers, Chinese Journal of Rare Metals, 41, 5, (2017)
  • [7] Pang S.M., Wang Z.Q., Zhou L., Chen B.Y., Xu L.H., Zhao B., Yan S.H., Li Z.A., Study on preparation of high-purified terbium and dysprosium metals used for rare earth giant magnetostrictive materials, Chinese Rare Earths, 29, 6, (2008)
  • [8] Liu F.D., Su Y., Chen Y.Q., Xiong Y.F., Yi X.F., Investigation and development of NdFeB magnets with excellent magnetic properties and stability of temperature, Metallic Functional Materials, 17, 3, (2010)
  • [9] Yu L.Q., Cui X.G., Luo W., Yan M., Influence of Cu and Gd on thermal stability and magnetic properties of Nd(DyAl)FeB magnets, Journal of Zhejiang University, 39, 8, (2005)
  • [10] Chen Y.X., Research progress of preparation of rare earth metals by electrolysis in fluoride salt system, Chinese Rare Earths, 35, 2, (2014)
123