Method for preparing Cu-Al2O3/graphite compound coating powder

The invention discloses a method for preparing Cu-Al2O3/graphite compound coating powder. The method includes the steps that a Al(OH)3 colloidal solution and mixed powder of zinc and graphite are added into an excessive number of CuSO4 solution, stirring reacting is carried out, and a Cu-Al(OH)3-graphite mixture is obtained; and filtering separation is carried out, the obtained Cu-Al(OH)3-graphite mixture is subject to vacuum drying and is contained in a protective atmosphere for heat treatment, and the Cu-Al2O3/graphite compound coating powder is obtained. Copper-graphite prepared from the method is high in bonding strength, the softening temperature is high, the intensity and the hardness are high, and the defects that in existing copper carbon composite materials, the copper powder and graphite powder bonding strength is low, the softening temperature is low, and the intensity is not high are overcome.