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本文系统地研究了2.7NaF·AlF_3(7wt％CaF_2)—Al_2O_3—Ymm_2O_3~*熔体的一系列物理化学性质。应用最优化设计原理,分别得到了表征该熔体初晶温度和粘度与Al_2O_3和Ymm_2O_3浓度关系的回归方程,以及该熔体表面张力、密度和电导率与Al_2O_3、Ymm_2O_3浓度和温度关系的回归方程。讨论了性质与组成之间的关系及用该熔体制备钇族稀土铝合金的适用性。
In this paper, a series of physicochemical properties of 2.7NaF · AlF_3 (7wt% CaF_2) -Al_2O_3-Ymm_2O_3 ~ * melt have been systematically studied. The regression equation that characterizes the relationship between the temperature and viscosity of the melt and the concentrations of Al 2 O 3 and Ymm 2 O 3 was obtained by using the principle of optimum design. The regression equation of the relationship between the surface tension, density and conductivity of the melt and the concentrations of Al 2 O 3, Ymm 2 O 3 and temperature . The relationship between properties and composition and the suitability of the melt for the preparation of yttrium-based rare earth aluminum alloys are discussed.