▎ 摘　　要

NOVELTY - Preparing closed cell foam metal composite material comprises (i) adding copper salt, sodium citrate and graphene nanosheets into distilled water, and ultrasonically dispersing for 10-30 minutes to obtain the first mixed solution, adding sodium borohydride solution into the first mixed solution under stirring, filtering, and drying to obtain graphene nanosheets with copper nanoparticles loaded on the surface; (ii) adding copper salt, sodium citrate and ceramic particles into distilled water, and ultrasonically dispersing for 10-30 minutes to obtain the second mixed solution, adding sodium borohydride solution dropwise into the second mixed solution under stirring, stirring for 1-5 hours, filter, and drying to obtain ceramic particles with copper nanoparticles loaded on the surface. USE - The method is useful for preparing closed cell foam metal composite material. ADVANTAGE - The method enables to prepare closed-cell foam metal composite material with enhanced mechanical property, which improves the wettability with the metal, and prevents agglomeration of the graphene mixing the graphene-loaded nano-particle with the foaming agent to improve the specific gravity, which is good for graphene for the nano-sheet into the metal melt and delaying the decomposition of titanium hydride, forming hole uniform closed cell foam metal material. The method optimizes the introduction of graphene, simplifies the preparation steps, and does not need to carry out high speed ball milling to the graphene, basically keeps the complete structure. The graphene aluminum can effectively improve the compression performance and the energy absorbing capacity of the closed cell foamed metal.