Preparation method of foamed copper

The invention discloses a preparation method of foamed copper to solve the problems of nonuniform pore structure distribution and small specific surface area of foamed copper obtained by existing foamed copper preparation processes. The method mainly comprises the steps of: (1) oil removal; (2) first coarsening; (3) second coarsening; (4) sensitization; (5) activation; (6) dispergation; (7) electroless copper plating; (8) step-by-step electroplating; and (9) heat treatment. The preparation method provided by the invention has the characteristics of simple technological steps, easily controllable process and low cost. By wholly optimizing the foamed copper preparation process, the obtained foamed copper has the advantages of high porosity, uniform pore structure distribution, large specific surface area, and good strength and toughness.