合成材料老化与应用2024，Vol.53Issue(2)：23-26,4.
闪光法测量C/C复合材料导热系数影响因素研究
Study on Influencing Factors of Measuring Thermal Conductivity of C/C Composites by Laser Flash Method
王惠馨 1张霞 1丁文皓 1张忠胜1
作者信息
- 1. 山东非金属材料研究所,山东济南 250031
- 折叠
摘要
Abstract
C/C composites have been widely used in aerospace and atomic energy fields,and their working temperature can reach more than 1000℃.In order to measure the thermal conductivity of C/C composites,the thermal diffusivity and specific heat capacity of C/C composites at temperature varying from 25℃ to 1000℃ were measured by laser flash method.The effects of graphite coating,sample thickness,reference sample and correction procedures were studied.In order to improve the test accuracy of thermal diffusivity of C/C composites,the sample should not be sprayed with graphite,and the test results should be corrected by using the infiltration procedure.In order to improve the accuracy of the specific heat capacity of C/C composites,the sample should be uniformly sprayed with graphite,the graphite standard sample should be used as the reference sample,and the test results should be corrected by Cowan method.关键词
C/C复合材料/闪光法/热扩散系数/比热容/导热系数Key words
C/C composite/laser flash method/thermal diffusivity/specific heat capacity/thermal conductivity引用本文复制引用
王惠馨,张霞,丁文皓,张忠胜..闪光法测量C/C复合材料导热系数影响因素研究[J].合成材料老化与应用,2024,53(2):23-26,4.
