Successful Hydrothermal Synthesis of α-Fe2O3 Hexagonal Micro-platelets and Its Application in Li-Ion Battery

介绍了一种界面接触热导的测试设备,为更好的实现测试过程中的轴向一维导热,该设备中增加了补偿加热装置.通过该设备,对高温合金GH4169和K417界面处,在温度160～280℃、载荷0～150 MPa条件下的接触热导进行了试验研究,验证了试验设备的适用性.对有、无补偿加热条件下的接触热导测试结果进行了对比分析.结果表明,同等条件下带补偿加热装置时的接触热导测试结果要比不带补偿加热装置时的大,且温度越高,补偿加热装置工作效果越好.

Compensation Heating Technique for Experimental Investigation of Thermal Contact Conductance across GH4169/K417 Interface

An experimental apparatus to measure the thermal contact conductance (TCC) between interfaces of two contact solid materials was introduced, and a new compensating heater was proposed to better achieve the one-dimensional axial heat transfer. A practical engineering example was used with pressed pairs of GH4169/K417 contacts in the range 160~280 °C and 60~180 MPa to demonstrate the applicability of the experimental apparatus. The measured values of TCC with and without compensation heater were studied and compared. The results show that the measured TCC with compensation heater is larger than that without compensation heater under the same condition and the compensation heater works better at high temperature.