Anisotropic thermal conductivity and enhanced hardness of copper matrix composite reinforced with carbonized polydopamine

For thermal management applications, copper (Cu) metal matrixes reinforced by carbon are undoubtedly one of the most promising composites for heat spreaders In frame this work, hard Cu matrix having anisotropic conductivity were fabricated using flakes coated with carbonized polydopamine. The simply immersing them into a dopamine aqueous solution, then they submitted to treatment under dihydrogen. This easy synthesis method results in ≈10 nm thick N-doped graphene-like film surrounding flakes. subsequently densified that contains about 0.23 wt % C show an increase hardness up 44% and 172% as compared pure parallel perpendicular sintering direction, respectively. addition is obtained anisotropy ratio 2.75.