This study aims to investigate the effect of the orientation of Gr powder and the volume fraction of Cu and Gr on the thermal conductivity (TC) and coefficient of thermal expansion (CTE) of Cu-Gr composites. Coarsening Gr flake (CGF) powder was coated with Cu through electroless plating (EP) method and was then sintered using pulsed current activated sintering. The present study confirmed that the presence of Cu oxide layer formed between Cu layer and CGF powder via electroless plating process and how it decomposes during the pulsed current activated sintering process. The anisotropy Gr has different characteristics depending on the bonding direction. In order to control the bonding direction of outstanding thermal properties of Gr, a stacking-pressing process was carried out, and the thermal conductivity was measured. The TC and CTE of Cu-Gr composites were measured in the longitudinal and transverse direction according to difference of Cu-Gr volume fraction, and were compared with theoretical value.

这项研究旨在研究Gr粉末的取向以及Cu和Gr的体积分数对Cu-Gr复合材料的导热系数（TC）和热膨胀系数（CTE）的影响。通过化学镀（EP）方法将粗化Gr鳞片（CGF）粉末涂上Cu，然后使用脉冲电流激活烧结法对其进行烧结。本研究证实了通过化学镀过程在Cu层和CGF粉末之间形成的Cu氧化物层的存在及其在脉冲电流活化烧结过程中如何分解。各向异性Gr根据结合方向具有不同的特性。为了控制Gr的优异的热特性的键合方向，进行了堆叠压制工艺，并测量了热导率。