Please consider attending the following:
Please also see correction—the seminar is Nov. 16, at 11:30 a.m., in ARMS 3115
MATERIALS ENGINEERING
“Field Microstructure Evolution of Solid-Solid Interfaces in Ionic Ceramics for Energy Applications”
By
Lucas D. Robinson
Purdue MSE Ph.D. Preliminary Exam
Advisor: Professor Edwin
García
ABSTRACT
Interfaces (grain boundaries, phase boundaries, surfaces, etc.) can greatly influence the performance of energy-related materials. Applications where interfaces play a critical role include solid state batteries and solid oxide
fuel cells, electronic materials, metallic vias, and solder bumps that connect different components. These bonded material systems possess equilibrium and kinetic properties that can be attributed to the underlying interfaces due to the interactions between
abutting phases, with dissimilar properties. In this context, understanding the evolution of the heterostructural phases that develop is a key step for the development of advanced devices. In this work, phase field models for the microstructure evolution of
homo- and heterointerfaces are reviewed. Current models in literature are found to be insufficient for modeling phase boundaries in battery materials, and do not fully describe a multiphase, multicomponent system with charge and polarization effects. A generalized
multiphase field theoretical framework is being developed to predict the effects of interfacial space charge, composition, and lattice mismatch on through-thickness transport properties for ceramic systems. Application of the model for microstructure evolution
in metallic systems is discussed as a stepping stone for its use in battery materials.
Date: Friday, November
16, 2018
Time: 11:30 A.M.
Place: ARMS 3115