Abstract

Measurements of the heat capacity of pure magnesium and ultralight magnesium–lithium alloy with a Li content of 30 at. % were performed by means of differential scanning calorimetry in the temperature range of 300 K to 825 K. The estimated error of the data obtained was 2–3%. The corresponding temperature dependences of the heat capacity were constructed. Peculiarities were revealed in the heat capacity temperature dependence of the Mg70Li30 alloy in the range of 570–700 K. It is shown that up to 750 K, the values of the specific molar heat capacity of the Mg70Li30 alloy are in good agreement with the data for pure magnesium.

中文翻译：

---

纯镁和超轻镁锂合金在 300 K 至 825 K 温度范围内的热容量

摘要

纯镁和锂含量为 30 at 的超轻镁锂合金的热容量测量。% 通过差示扫描量热法在 300 K 至 825 K 的温度范围内进行。所得数据的估计误差为 2-3%。构建了热容量的相应温度依赖性。Mg70Li30 合金在 570-700 K 范围内的热容温度依赖性显示出特殊性。结果表明，直到 750 K，Mg70Li30 合金的比摩尔热容值与数据非常吻合为纯镁。