关键词: 接触热阻, C/C复合材料, 高温合金, 试验研究

Abstract: The heat pipe cooled leading edge is a novel and efficient thermal protection method in hypersonic aircraft design, and the thermal contact resistance between the C/C composite material structure and high-temperature heat pipes plays a very important role in heat transfer efficiency and thermomechanical coupling. A testing platform of high-temperature thermal contact resistance is established, with which the thermal contact resistance between a three-dimensional braid C/C composite material and a superalloy GH600 specimen is tested under different interface pressures, interface roughnesses and temperatures. The results show that the present testing platform is feasible for the experimental investigation of high-temperature thermal contact resistance, and the thermal contact resistance between three-dimensional braid C/C composite material and superalloy GH600 is obtained, which can be an important reference for the design and safety evaluation of heat pipe cooled thermal protection structures.

Key words: thermal contact resistance, C/C composite material, superalloys, experimental investigation