Manufacturing method of nanoporous Au with hierarchical structure

摘要

The present invention relates to a method for producing a porous gold alloy having a multi-layer structure in which grains having nano-sized pores and having a plurality of layers are formed by repeating annealing and high- The fracture toughness against cracks can be improved by delaying the cracks. The present invention is advantageous in that the hierarchical structure can be effectively formed while preventing the recrystallization of the parent alloy by repeating the annealing and the hot rolling a plurality of times alternately.