石墨晶体的热膨胀系数和热导率  

A review of the coefficient of thermal expansion and thermal conductivity of graphite

作　　者：赵露 唐江 周敏 申克[2,3] ZHAO Lu;TANG Jiang;ZHOU Min;SHEN Ke(Tsinghua-Berkeley Shenzhen Institute,Tsinghua University,Shenzhen 518055,China;College of Materials Science and Engineering,Hunan University,Changsha 410082,China;Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology,Hunan University,Changsha 410082,China)

机构地区：[1]清华大学清华-伯克利深圳学院,广东深圳518055 [2]湖南大学材料科学与工程学院,湖南长沙410082 [3]湖南大学先进炭材料与应用技术湖南省重点实验室,湖南长沙410082

出　　处：《新型炭材料》2022年第3期544-555,共12页New Carbon Materials

基　　金：国家自然科学基金项目(51872083).

摘　　要：石墨平面内和平面间的原子间作用力具有显著差异,形成了各向异性的物理性质。其独特的热学性质使石墨材料在电子器件散热、核能等领域具有重要的应用。石墨热膨胀和导热性质一直以来是炭材料领域中的前沿科学问题,其理论和实验研究受到广泛关注。本文综述了石墨晶体热膨胀系数和热导率的研究进展及应用现状,首先介绍了石墨热膨胀系数的理论分析和实验结果,并探讨了热膨胀系数的影响因素;然后总结了石墨热导率的测量和理论计算结果,讨论了石墨中特殊的声子散射机制;最后总结了石墨在热管理领域的应用,并对该领域发展前景进行了展望。Graphite serves as a key material for heat dissipation in electronic devices and nuclear engineering due to its remark-able thermal properties.The thermal expansion and conductivity of graphite have always been major scientific parameters in the field of carbon materials.Therefore,theoretical and experimental research in this area has received extensive attention.Research progress on the thermal expansion coefficient and thermal conductivity of graphite crystals is reviewed.Theoretical and experiment results on the thermal expansion coefficient of graphite are first introduced,followed by a discussion of the methods for measuring graphite thermal conductivity and the special phonon scattering mechanism in graphite.Finally,the uses of graphite in thermal management are summarized,and the development prospects in this field are discussed.

关 键 词：石墨 热膨胀 热导率 热管理 

分 类 号：TQ127.11[化学工程—无机化工]