|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||Non-Arrhenius Grain Growth, Interfacial Complexion Transitions and the Grain Boundary Character Evolution in SrTiO3
||Madeleine N. Kelly, Gregory S. Rohrer, Wolfgang Rheinheimer, Michael Hoffmann
|On-Site Speaker (Planned)
||Madeleine N. Kelly
Strontium titanate exhibits interesting, non-Arrhenius grain growth within the temperature range of 1300 °C to 1550 °C. The relative grain boundary energy was determined by measuring grain boundary thermal grooves using AFM in this temperature range. A complexion transition, as indicated by an abrupt change in grain boundary energy, was detected between 1350 °C and 1400 °C which is approximately where the grain size distribution begins to transition. Orientation information by EBSD was collected by Xe-ion plasma FIB and five parameter grain boundary character distributions were determined at temperatures before non-Arrhenius grain growth behavior began, within the transition region and after the transition. The temperature dependence of grain growth, complexion transitions and populations of grain boundary planes will be discussed for strontium titanate in a temperature range of 1300 °C to 1550 °C.