▎ 摘　　要

NOVELTY - Improving high temperature stability of metal twinning, comprises (i) preparing nanoporous metal-nanoporous copper (NPC) by dealloying method, (ii) placing NPC in methane atmosphere at room temperature for 1 hour to cover its surface with a layer of amorphous carbon, then heating to 1080 degrees C at a rate of 30 degrees C/minute, and cooling to 985 degrees C at a rate of 60 degrees C/minute, where the amorphous carbon is catalyzed and converted into graphene and part of the NPC melts and evaporates to form nano-copper droplets bound by graphene at higher temperature, and the nano-copper droplets solidified into crystals and nano-metal twinnings bound by graphene having improved high temperature stability are generated when the temperature is lowered to 985 degrees C. USE - The method is useful for improving high temperature stability of metal twinning. ADVANTAGE - The method: is simple; and binds the surface of the nano-metal twinning with graphene, which increases high temperature stability and maintains excellent material properties.