| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Grain Size Dependent Mechanical Properties of Hard Ceramics |
| Author(s) |
Heonjune Ryou, James Wollmershauser, Kevin Anderson, Alex Moser, Edward Gorzkowski, Boris Feygelson |
| On-Site Speaker (Planned) |
Heonjune Ryou |
| Abstract Scope |
Recent work at the U.S. Naval Research Laboratory (NRL) on processing and properties of nanocrystalline ceramics has shown that hardness, compressive strength, and toughness of hard ceramics improve as grain size become smaller. The increase in mechanical performance of nanocrystalline ceramic is attributed to the increasing volume of interfaces, such as grain boundary and triple junction. However, evaluation of the performance of nanocrystalline ceramics has been limited to smaller samples due to processing difficulties for larger platforms. Working in collaboration with two industry partners, NRL is scaling up production of nanopowder and sintering technology to produce ultra-fine grained ceramics for larger plates. The effort focuses on scaling up Navy owned patents and intellectual property on nanopowder production as well as sintering approaches for retaining nanostructured microstructures. In this presentation, progresses in NRL nanocrystalline ceramic synthesis and properties and issues related to scaling up processing technology will be discussed |