Mg基高温相变储热共晶合金熔化相变焓的研究

发布时间：2018-03-24 12:53

  本文选题：Mg基共晶合金　切入点：高温储热　出处：《功能材料》2017年02期

【摘要】：选取Bi、Sn、Cu、Zn、Ni、Si等元素分别加入Mg基体中,熔炼得到7种Mg基二元和三元高温相变储热共晶合金。运用固溶体准化学模型及其2种简化形式对Mg基共晶合金的熔化相变焓进行计算,并通过DSC实测值对预测值进行验证。结果表明,7种Mg基共晶合金的实测熔点在450~600℃范围内,实测熔化相变焓200kJ/kg左右。由简化模型得到的预测值同实测值匹配度较高,能够用于Mg基多元共晶合金熔化相变焓的预测。此外,提高熔化熵值高的元素比例并增加组元数,可以提高共晶合金体系的熔化相变焓。
[Abstract]:Seven kinds of Mg-based binary and ternary high temperature phase change heat storage eutectic alloys were obtained by melting Bi-Sn-Sn-CuOZZn-NiON-Si and other elements into mg matrix. The melting enthalpy of Mg-base eutectic alloy was calculated by using the solid solution quasi chemical model and its two simplified forms, and the melting enthalpy of Mg-base eutectic alloy was calculated. The results show that the measured melting point of 7 Mg-base eutectic alloys is in the range of 450 鈩，

本文编号：1658384