| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Light Metal and Composites Technology
|
| Presentation Title |
Nanostructured Composites via Environmentally Controlled Pressure Assisted Sintering |
| Author(s) |
James A. Wollmershauser, Boris N Feigelson, Kevin P Anderson, Benjamin L Greenberg, Kedar Manandhar, Heonjune Ryou, Edward P Gorzkowski |
| On-Site Speaker (Planned) |
James A. Wollmershauser |
| Abstract Scope |
Advanced metallic and ceramic composites often require controlled chemical mixing of phases that allows for specific microstructures which enhance functional properties such as exchange coupling in magnetic systems, and fracture resistance, strength, and hardness in composite structural ceramics. NRL’s Environmentally Controlled Pressure Assisted Sintering (EC-PAS) utilizes high pressures to retard bulk diffusion and phase mixing while simultaneously encouraging fast densification by means of contaminate-free high-surface-energy nanoparticles to produce dense nanostructured materials. The talk will focus on EC-PAS processing and properties of a SmCo-Fe exchange-coupled magnetic composites made from mixed powders and a hard transparent ceramic made from spinel/alumina core/shell nanoparticles. The two cases show the capability of NRL’s sintering technique to control microstructure and properties of the dense nanostructured composites. |