LAUSR

Abstract Ultrahigh thermal conductivity Cu/graphite membrane composite with continuous well-packed laminate structure is prepared by tape casting with hot-pressing sintering. As-prepared composite material has anisotropic thermal properties with ultrahigh in-plane thermal conductivity and low in-plane coefficient of thermal expansion because of its extraordinary packed laminate structure. Thermal properties of Cu/graphite membrane composite can be designed according to requirements by adjusting volume fraction of graphite membrane in the composite. The maximum value of Cu/graphite membrane composite (50 vol% graphite membrane) in-plane thermal conductivity is 1005  W · m - 1 K - 1 , while the minimum value of the in-plane coefficient of thermal expansion is 7 × 10 - 6 K - 1 . This meets the high requirements for thermal management materials.