About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Powder-based Dealloying: Scalable Synthesis of Porous Refractory Alloys |
Author(s) |
Alyssa Chuang, Ian McCue, Jonah Erlebacher |
On-Site Speaker (Planned) |
Alyssa Chuang |
Abstract Scope |
Dealloying refractory alloys requires the use of a molten metal solvent to produce the characteristic self-organized porous morphologies associated with selective dissolution. This process is challenging to scale up because the velocity of the dealloying front is limited by diffusion of the dissolving species away from the reaction front. Powder-based dealloying is a promising approach to reduce the diffusion distance of the dissolving species to the radius of a single powder particle by adapting the dealloying environment to a two-component powder mixture. Here we present a study of the solid metal and liquid metal dealloying kinetics of the two-component powder system comprising TaTi as the parent alloy powder and Cu as the solvent powder. By tailoring the processing conditions and TaTi:Cu ratio, we can synthesize a wide spectrum of microstructures using powder-based dealloying and apply our findings to laser-based additive manufacturing. |
Proceedings Inclusion? |
Undecided |
Keywords |
Powder Materials, High-Temperature Materials, |