Modulated electromagnetic induction calorimetry of reactive metallic liquids
Modulated electromagnetic induction calorimetry of reactive metallic liquids
复制标题
活性金属液体的调制电磁感应量热法
DOI：
10.1088/0957-0233/16/2/011
复制
发表时间：
2005
影响因子：
2.4
通讯作者：
H. Fecht
中科院分区：
文献类型：
--
作者：
R. Wunderlich;H. Fecht
介绍了一种非接触式测量电磁悬浮液态金属合金比热容、熔化焓和热输运性质的方法。该方法是基于分离的加热和定位领域，调制的感应加热功率输入和高温测量的温度测量，使高活性或过冷金属液体服从量热法的调查。基于耦合水库的热流模型的开发，从准确测量的比热容和热弛豫时间的条件。描述了用于量化调制加热功率输入的校准程序，由此获得比热容。实验结果表明，该方法的原理和一些应用结果从IML-2和MSL-1空间实验室任务。
A method for the non-contact measurement of the specific heat capacity, the enthalpy of fusion and thermal transport properties of electromagnetically levitated liquid metallic alloys is described. The method is based on the separation of heating and positioning fields, modulation of the inductive heating power input and pyrometric temperature measurement making highly reactive or undercooled metallic liquids amenable to calorimetric investigation. A heat flow model based on coupled reservoirs is developed from which conditions for the accurate measurement of the specific heat capacity and of the thermal relaxation times are derived. Calibration procedures for the quantification of the modulated heating power input are described from which the specific heat capacity is obtained. Experimental results to demonstrate the principles of the method and some application results from the IML-2 and MSL-1 Spacelab missions are presented.