An Interdisciplinary View of Interfaces: Perspectives Regarding Emergent Phase Formation

[+] Author and Article Information
Kyle Brinkman

Department of Materials Science and Engineering, Clemson University, Clemson, SC, USA

1Corresponding author.

ASME doi:10.1115/1.4037583 History: Received July 18, 2017; Revised August 10, 2017


A perspective on emergent phase formation is presented using an interdisciplinary approach gained by working at the "interface" between diverse application areas including solid oxide fuel cells and ionic membrane systems, solid state lithium batteries, and ceramics for nuclear waste immobilization. The grain boundary interfacial characteristics of model single-phase materials in these application areas including i) CeO2, ii) Li7La3Zr2O12 (LLZO) and iii) hollandite of the form BaxCsyGa2x+yTi8-2x-yO16 are discussed as well as the potential for emergent phase formation in composite systems. The potential physical properties resulting from emergent phase structure and distribution are discussed, including an overview of existing 3D imaging techniques recently used for characterization. Finally, an approach for thermodynamic characterization of emergent phases based on melt solution calorimetry is outlined which may be used to predict the energy landscape including phase formation and stability of complex multi-phase systems.

Copyright (c) 2017 by ASME
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