In current work, thermal conductivity, enthalpy of fusion, specific heat, and thermal diffusivity of the Al-8.8La-1.2Ni cast alloy has been investigated. Chemical element analysis of the studied alloy was determined with X-Ray Fluorescence Spectrometer (XRF) and SEM microscopy with Energy Dispersive X-Ray Spectroscopy (EDS). Thermal conductivity of ascast Al-8.8La-1.2Ni alloy was measured using comparison cut bar method in the temperature range of 308–773 K. Thermal conductivityvalues decreased gradually in the studied alloy with the increase of temperature. The thermal temperature coefficient was calculated from the thermal conductivity-temperature graph. The heat flow-temperature curve was obtained by performing Differential Scanning Calorimetry (DSC) analysis. Enthalpy of fusion and specific heat values were also determined. Thermal diffusivity values were calculated as a function of temperature using the relevant equation. It was determined that the thermal diffusivity values increased with increasing temperature.

中文翻译：

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三元Al-La-Ni铸造合金热性能的测定

在目前的工作中，研究了 Al-8.8La-1.2Ni 铸造合金的热导率、熔化焓、比热和热扩散率。用 X 射线荧光光谱仪 (XRF) 和 SEM 显微镜和能量色散 X 射线光谱仪 (EDS) 确定所研究合金的化学元素分析。铸态 Al-8.8La-1.2Ni 合金的热导率在 308-773 K 温度范围内使用比较切割棒法测量。随着温度的升高，研究合金的热导率值逐渐降低。由热导率-温度图计算热温度系数。通过进行差示扫描量热法（DSC）分析获得热流-温度曲线。还测定了熔化焓和比热值。使用相关方程将热扩散率值计算为温度的函数。已确定热扩散率值随温度升高而增加。