【摘要】 为进一步优化电解制备Al-Cu-Y合金的热、动力学条件，对AlF₃-（Li,Na）F-（Al₂O₃-Y₂O₃）熔盐体系的密度、黏度及电导率变化规律进行研究。分别采用阿基米德法、连续变化电导池常数法和旋转法测定AlF₃-（Li,Na）F-（Al₂O₃-Y₂O₃）熔盐体系在温度为900～1 000℃范围内，n（（Li,Na）F）:n（AlF₃）=2.5时的密度（ρ）、电导率（σ）、黏度（η）随温度和组分的变化规律，结果表明：在温度900～1 000℃范围内，AlF₃-（Li,Na）F-（Al₂O₃-Y₂O₃）体系中Al₂O₃和Y₂O₃的含量一定，密度—温度、黏度—温度和电导率—温度之间均呈线性关系。在温度为950℃条件下，熔盐体系的密度随Al₂O₃含量的增加而线性减小，随Y₂O₃含量的增加而线性增加；电导率随Y₂O₃或Al₂O₃含量的增加而线性减小；体系的黏度则随Y₂O₃或Al₂O₃含量的增加而线性增加。更多还原

【Abstract】 To optimize the thermal and kinetic conditions for the preparation of Al-Cu-Y alloys by electrolysis,the variation law of density,viscosity and conductivity of AlF3-（Li,Na）F-（Al₂O₃-Y₂O₃） molten salt systems was studied.The change law of density,conductivity and viscosity with different oxide concentration contents in this system was measured by the Archimedes method,continuously varying conductivity cell constant method and rotation method when （Li,Na）F:AlF₃（molar ratio）=2.5 in the temperature range of 900-1 000℃.The results showed that the density,viscosity and conductivity were linear with the fixed composition of Al₂O₃ and Y₂O₃ in such a temperature range.At a constant temperature of 950℃,the density of the molten salt system decreased linearly with increasing Al₂O₃ content and increased linearly with increasing Y₂O₃ content;with increasing oxide content （Al₂O₃ or Y₂O₃）,the conductivity of the molten salt system decreased linearly,while the viscosity of the system increased linearly.更多还原