Induction and pore-formed stages in Al2Au’s dealloying process in HCl solutions

Enhanced Molecular Interaction of 3D Plasmonic Nanoporous Gold Alloys by Electronic Modulation for Sensitive Molecular Detection

“…On the other hand, the nanoporous Au/Al alloy exhibits a lower gold concentration compared to other alloys due to its division into several phase regions (i.e., AuAl, AuAl 2 , AlAu 2 , etc. ), unlike the Au/Ag and Au/Cu alloys. − Among these phases, it has been reported that nanoporous structures can be created through dealloying only on AuAl and AuAl 2 phases containing the atomic ratio of gold to aluminum (0.35:1). , From these results, we determined the dealloying times for the nanoporous alloys with similar pore sizes.…”

Temperature-Dependent Selective Oxidation Behavior of Al2Au Alloy: Insights for Tailoring Au-Enhanced Oxide Layers

“…In comparison to S spun (Figure1(c1)) and S 550 (Figure1(d1)), S 800 exhibited a significant increase in the Al 2 Au grain size with high-contrast precipitates left at the original grain boundaries (Figure1(e1)). The Al 2 Au grain boundaries, which were proven to be high in Au content,27 underwent dissolution and rearrangement at 800 °C and consequently promoted the growth of Al 2 Au grains. The calibration of SASP results (Figure1(e2)) confirmed that the parent phase was Al 2 Au and the precipitate phase at grain boundary junctions corresponded to the AlAu phase.…”