Determining the phase-transition temperature is crucial in the design of molten salt reactors, as operational temperatures need to be established considering the safety margins related to the thermodynamic stability of the molten salt system. This study introduces a novel approach to determine the phase-transition temperature based on rapid electrical conductivity measurements using a microsecond-scale staircase voltammetry technique. The phase-transition temperature is determined near distinct points where the electrical conductivity abruptly changes, indicating phase transitions. The phase-transition temperatures of three LiCl–KCl molten salt systems, determined using the proposed approach based on electrical conductivity measurements, are with relative errors less than 3% compared with reported phase transition data based on conventional thermal analysis techniques.

中文翻译：

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通过微秒级阶梯伏安法测定熔盐混合物的相变温度


确定相变温度在熔盐反应堆的设计中至关重要，因为需要考虑与熔盐系统热力学稳定性相关的安全裕度来确定操作温度。本研究介绍了一种基于微秒级阶梯伏安技术的快速电导率测量来确定相变温度的新方法。相变温度是在电导率突然变化的不同点附近确定的，表明相变。使用所提出的基于电导率测量的方法确定的三种 LiCl-KCl 熔盐体系的相变温度与基于传统热分析技术报告的相变数据相比，相对误差小于 3%。