Diamond metal composite structure, heat-conducting fin and preparation method of diamond metal composite structure

The invention relates to the technical field of heat-conducting materials, in particular to a diamond metal composite structure, a heat-conducting fin and a preparation method of the heat-conducting fin. The composite structure comprises a composite layer, the composite layer comprises a diamond layer and a metal composite layer, the diamond layer is formed by arranging a plurality of diamond core-shell structures in a close packing mode, and each diamond core-shell structure comprises diamond particles and a metallization layer; the metal composite layer is arranged outside the diamond layer and used for filling gaps and gaps between the diamond core-shell structures. The diamond metal composite structure is a composite layer, each diamond layer is formed by closely packing and arranging a plurality of square crystal diamond core-shell structures which are uniform in size and consistent in shape, the close packing ensures that the diamond volume proportion is maximized, and the metalized layer and the metal