摘要
二元硝酸盐是非常重要的传热介质,通过熔融法制备混合盐试样,利用差示扫描量热法和蓝宝石法分别研究测定了 KNO 3-NaNO 2混合盐的热物性以及比热值。研究结果表明,二元硝酸盐具有较低的熔点和良好的热稳定性,适宜的工作温度在200~430℃之间。熔盐的比热值随成分不同有所变化,但在工作温度范围内变化很小。为熔盐的使用工艺改进提供了数据支持。
Binary nitrate salt was an important heat transfer medium.Mixed salt samples were prepared by mol-ten method.The thermal physics and specific heat capacity of the mixed salt consisted of KNO 3 and NaNO 2 were studied and measured separately by differential scanning calorimetry (DSC)and sapphire method.The re-sults showed that binary nitrate salt has low melting point and good thermal stability.The optimal operating temperature was between 200 and 430 ℃.The specific heat capacity of molten salt changes with the composition but changes little in the operating temperature.This experimental research provided data support for improving heat treatment process.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第15期15009-15011,共3页
Journal of Functional Materials
基金
国家重点基础研究发展计划(973计划)资助项目(2011CB013400)
国家自然科学基金资助项目(51375278)
关键词
硝酸盐
差示扫描量热法
热物性
比热
nitrate salt
differential scanning calorimeter
thermal physics
specific heat capacity