摘要
对热物性测试方法———Angstroms法的测试原理进行深入分析和研究,针对实验模型和石墨化阴极炭块材料性能的特点,利用精密的电子仪器及先进的数据采集设备,设计开发了一套铝电解槽用阴极炭块热物性测定装置。实验采用的纵向周期热流法可以直接测定材料的导温系数,在已知密度和比热参数的情况下可以计算出导热系数。在20～300℃的范围内,测定装置操作方便、可行,数据可靠,测试精度较高。
A thermo-physical properties measurement method, Angstorms method has been developed in this paper. According to the experimental modeling and the characteristic of graphitized cathode carbon, an instrument has been designed to determine the thermo-physical properties of the graphitized cathode material for aluminum reduction cell by employing modern electrical facilities and data acquisition apparatus. Angstroms method is an axial periodic heat flow technique by which the thermal diffusivity can be measured directly. The thermal conductivity can be obtained with relation to thermal diffusivity if the specific heat and the density are known. The method and the instrument are applicable in the temperature range of 20～300℃.
出处
《轻金属》
CSCD
北大核心
2005年第6期48-51,共4页
Light Metals
关键词
周期热流法
导温系数
导热系数
石墨化阴极
eriodic heat flow method
Thermal conductivity
Thermal diffusivity
Graphitized cathode
Aluminum reduction cell
