Fig. 4: Experimental dealloyed structures.

a A schematic diagram of the morphological evolution during the dealloying process and the definition of the geometric parameters: the thickness of Ta leak h_L, the thickness of the dealloyed structure h_D, and the thickness of the connected structure h_C. (b), (c) Experimental validation of phase-field simulations results comparing SEM sections and 3D etched morphologies for Ta₁₅Ti₈₅ alloys dealloyed by pure Cu (b) and Cu₇₀Ag₃₀ melts yielding a topologically connected structure with uniform ligament size (c); scale bars 10 μm.