| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
Mechanical Properties of Nanocrystalline Ceramics |
| Author(s) |
Heonjune Ryou, Kevin Anderson, John Drazin, Edward Gorzkowski, Boris Feygelson, James Wollmershauser |
| On-Site Speaker (Planned) |
Heonjune Ryou |
| Abstract Scope |
New development of ceramic processing techniques in recent years have created nanocrystalline ceramics with extremely small grain sizes: below 100 nm. Many studies have reported the extent of the mechanical property improvement in nanocrystalline ceramics with extremely small grain sizes. However, the resulting mechanical properties depends on many aspects of processing and testing methods. In this presentation, various nanocrystalline ceramics with grain sizes below 100 nm were characterized with indentation and flexural testing. Regardless of test methods, nanocrystalline ceramics show the Hall-Petch strengthening of nanocrystalline ceramics but the results are influence by the sample processing, geometry, surface roughness, as well as test geometry. The challenges of performing the tests for nanocrystalline ceramics arise from the nature of nanocrystalline ceramics and current manufacturing techniques. |