About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Process-structure Relationships in Nanoporous Gold Dealloying and Sources of Its Synthesis Variability |
Author(s) |
Stanislau Niauzorau, Aliaksandr Sharstniou, Natalya Kublik, Bruno Azeredo |
On-Site Speaker (Planned) |
Stanislau Niauzorau |
Abstract Scope |
A recent spike of interest in nanoporous gold applications where its properties can be successfully exploited promoted the dealloying community to take a closer look at its process-structure relationships to achieve a better control over its morphology as it was proven to strongly regulate its properties. In this study, the process-structure relationships were established for nanoporous gold fabricated by electroless chemical dealloying of nanocrystalline AuAg thin films and it was found that the variability can be introduced (i) by the difference in equilibration time, which results in different solution evaporation rates and open circuit potential fluctuation, and (ii) by aging of precursor thin film in ambient and inert environments, which can promote its oxidation and tarnishing along with a grain growth. Additionally, it was found that the residual silver content in nanoporous gold can serve as a better predictor of the ligament diameter rather than dealloying time. |
Proceedings Inclusion? |
Undecided |
Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Other |