| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Reduced Pressure Nanosintering during Environmentally-Controlled Pressure-Assisted Sintering |
| Author(s) |
Kevin P. Anderson, James Wollmershauser, Boris Feigelson |
| On-Site Speaker (Planned) |
Kevin P. Anderson |
| Abstract Scope |
Nanocrystalline ceramics exhibit a diverse set of exceptional properties but despite rapid innovation in the processing of these materials, bulk production at an industrial scale remains a challenge. A recent but proven process, Environmentally Controlled – Pressure Assisted Sintering (EC-PAS) has been utilized to fabricate a broad range of fully dense nanocrystalline materials, including MgAl2O4 spinel with grain sizes below 4 nm. EC-PAS enables densification with negligible grain growth through a combination of applied pressure (< 2 GPa), low temperature (< 0.5 Tm), and the creation and preservation of pristine nanoparticle surfaces throughout the sintering process. In this work, the scalability of EC-PAS was demonstrated through innovative tuning of heating schedules to compensate for reduced applied pressures. Using MgAl2O4 as a model system, an iterative approach was applied to enable nanosintering at industrially relevant pressures. Optimum sintering parameters will be discussed, in addition to the future prospects of this approach. |