温度对高温合金GH4169/K417间接触热导的影响

Influence Investigation of Temperature on Thermal Contact Conductance across GH4169/K417 Interface

摘要:

采用自主研制的带补偿加热的接触热导测试装置，测试了航空发动机用高温结构材料GH4169/K417间不同温度(160~280 ℃)和粗糙度下的接触热导，研究温度对其接触热导的影响行为，对比分析有无补偿加热条件下接触热导的测试结果。结果表明，带有补偿加热的接触热导测试装置能有效降低横向热流损失，且随着温度的升高效果逐渐明显。不同粗糙度的GH4169/K417材料组合，温度对其接触热导的影响不同，主要与其界面处材料的变形、氧化有关

Abstract:

Using self-developed thermal contact conductance testing equipment with compensation heater, the thermal contact conductance of aero engine high-temperature structure material GH4169/K417 with different temperatures(160 ~ 280 °C) and roughness were tested, the influence behavior of the temperature on the thermal contact conductance was studied, and the thermal contact conductance test results under the condition with and without compensation heater were comparatively anglicized. Results show that the thermal contact conductance testing equipment with compensation heater can effectively reduce the lateral heat loss, and gradually with the rise of temperature effect is obvious. To different roughness of GH4169/K417 material combination, influence of temperature on the thermal contact conductance is different, which is mainly related to the deformation and oxidation between the relevant materials interface