Advanced Fabrication of Nanoporous Ni-based Superalloy Membranes

Nickel-based superalloys are predominantly used as structural materials in high-temperature applications due to their exceptional high-temperature strength resulting from precipitation hardening of the coherent γ’-phase. The self-assembly of the γ’-cubes to interconnected networks can be utilized by electrochemical leaching to produce nanoporous superalloy membranes with open porosity and, therefore, functional properties. So far, only γ’-membranes consisting of the intermetallic compound Ni3(Al, Ti, Ta) have been manufactured and analyzed. In this work, the production of the mirrored γ-membranes, consisting of the nickel solid solution, is described.