msepostdoc-list Seminar Notice for Lucas Robinson's Preliminary Exam. Seminar Friday, Nov. 16, at 11:30 a.m., in ARMS 3115; Review from 12:30 - 1:00, in ARMS 2326; Exam at 1:00, in ARMS 2326

[Son, Rosemary E]

Please consider attending the following:   Please also see correction-the seminar is Nov. 16, at 11:30 a.m., in ARMS 3115

MATERIALS ENGINEERING
SEMINAR


"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

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