About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Thermodynamics of Materials in Extreme Environments
|
Presentation Title |
Measuring Interfacial Thermodynamics from High Temperature In situ TEM Based Bicrystals Tested under Mechanical Load |
Author(s) |
Shen J. Dillon |
On-Site Speaker (Planned) |
Shen J. Dillon |
Abstract Scope |
grain boundary and solid-solid interfacial thermodynamics are challenging to probe at individual interfaces. Force balances with applied load and the stress dependence of kinetic response enables the measurement of interfacial energy and the properties of transport mediating defects. Such experiments ideally require the use of small scale samples due to the importance of length scale in the diffusional response. We have developed in situ TEM based mechanical loading experiments coupled with localized laser heating that enable such experiments to be performed over a broad range of temperatures. The talk will discuss how zero creep, Coble creep type experiments, and sintering can be utilized to probe interfacial properties. |