ProgramMaster Logo
Conference Tools for 2010 TMS Annual Meeting & Exhibition
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Propose A Proceedings
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2010 TMS Annual Meeting & Exhibition
Symposium Computational Thermodynamics and Kinetics
Presentation Title Phase field simulations of growth and coarsening of electrocatalyst particles
Author(s) Megna Shah, Scott A Barnett, Peter W Voorhees
On-Site Speaker (Planned) Megna Shah
Abstract Scope Catalyst particles are critical to the performance of sensors and fuel cells. One method of forming the particles is to dope the ceramic substrate with the desired catalytic element. Under operating conditions, the dopant will diffuse out of the bulk to form metal electrocatalyst particles on the surface of the ceramic. The performance is directly related to how much surface area is available for catalysis, and therefore it is important to know the stability of the microstructure over time. We employ a phase field model to describe the growth and coarsening of the electrocatalyst particles. A ternary alloy model is used to describe the interactions between vacancies, the metal catalyst and the ceramic substrate. Using this model. it we examine the effects of varying levels of bulk and surface diffusion on the growth and coarsening of the particles. The results of the simulations are compared to experimental results.
Proceedings Inclusion? Definite: A CD-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A MIXED-MODE MODEL FOR PRECIPITATION IN AL-MG-SI ALLOYS
A Phase Field Study on the Growth and the Interaction of Ni 4Ti 3 Precipitates In Niti Shape Memory Alloy
A Study of the Te Melting Line and Solid-Liquid Transitions
Ab Initio Modeling of Interstitial Diffusion in bcc Fe
Abnormal Grain Growth in the Presence of a Static Particle Dispersion
Affinities for Grain Contacts in 3D Grain Growth
Atomistic Behavior Driving High Temperature Contact Line Advancement
Atomistic comparison of volume-dependent melt properties from four models of aluminum
Atomistic Modeling of Solid-Liquid Interfaces Subject to Lateral Stresses
Atomistic simulation of segregation coefficient of high concentration Ni-Cu alloys
Compositional Patterning and Morphological Evolutions in Binary and Ternary Alloys Driven by Irradiation
Compositional Point Defect Evaluation using Diffusion Multiples
Controlling Crystal Structure in Phase Field Crystal Modeling
Controlling Diffusion in Semiconductor Nanostructures by Size and Dimensionality
Developing Reliable InteratomicPotentials for HCP Mg-Li Alloys from ab Initio and Experimental Data
Development of Reliable Interatomic Potentials for HCP Mg-Li Alloys from Ab Initio and Experimental Data
Diffusion in Alloys and Intercalation Compounds from First Principles
Diffusion of Interstitial and Substitutional Elements in γ/γ’ Interface in Ni-Al Superalloys: A First Principles Study
Diffusion on Al-Type Sites in Intermetallic Phases Having the Tetragonal Al4Ba Structure
Diffusivity in Al-Cu and Cu-Zr liquids
Effect of Stresses on Grain Boundary Thermodynamics: Theory and Atomistic Simulations
Effects of Spin Transition on Diffusion of Fe2+ in Ferropericlase in Earth’s Lower Mantle
Effects of Tempering on Fe-Atom Vibrations in Martensitic Steel
Evolving Microstructures in Lipid Bilayers: Novel Insights from Materials Science
Explaining the Change in Diffusion Mechanism in the Series of L12 Phases In3R (R= Rare-Earth)
First-principles Approach to Transition States of Diffusion
First-Principles Calculations on Impurity Substituted Cementite
Genetic alloy design by nanoprecipitate control: stainless steels and aluminium alloys
Grain Boundary and Interfacial Energy Database for Fe in a Suitable Form for Simulation of Microstructure Evolution
Grain Boundary Premelting: Insights from Order Parameter Models
Grain Growth Stagnation due to Grain Boundary Roughening
Influence of Local Interface Phenomenon on Coalescence Kinetics Models in Ni-base Alloys
Irradiation Induced Re-Solution and Growth of Xenon Nano-Bubbles Simulated by First Passage Monte Carlo
Island Shape Controls Magic Size Effect for Heteroepitaxial Diffusion
Kinetic Monte Carlo Study of Sputter-induced Morphological Patterns in Alloy Surfaces
Kinetics of ALN Precipitation in the Ferrite Phase Field of Microalloyed (HSLA) Steels
Kinetics of Corrosive Defects Formed on Au Substrates Accompanied by Alkanethiol Monolayer Assembly in the Presence of Oxygen
Microstructure Engineering via Throttled Nucleation
Modeling Grain Boundaries: Wetting, Vacancies and Creep
Modeling of Cementite Formation in Extra and Ultra Low Carbon Steels
Modeling of Phase Separation in Uranium-Zirconium Alloys via Monte Carlo Methods
Modeling of Phase Transformation Behaviors by Cementite Formation at Isothermal Bainite Transformation Region in TRIP-Assisted Steels
Modelling Ordering Phenomena in Condensed Phases
Molecular Dynamics Simulation of Grain Growth in 3D Nanograined Ni
Molecular Dynamics Simulation of Self-Diffusion in BCC Metals
Molecular Dynamics Simulations of Brazing
Monte Carlo Potts Simulation of Strain Induced Sub-Grain Structure Formation
Monte Carlo Simulation of Multiferroic BiFeO3
Multiscale modelling of grain growth in nanocrystalline iron
Nanoscale Quasi-Liquid Interfacial Films: The Interplay of Premelting, Prewetting and Multilayer Adsorption
Occupancy Probability of a Sublattice Of D022-Ni3V In Ni-Al-V System:Determined by Microscopic Phase Field
Phase Field Modeling of Grain Size Dependent Particle Pinning
Phase Field Modeling of Void Microstructure Evolution in Irradiated Metals
Phase Field Modelling of Austenite Formation from a Ferrite-Carbide Lamella Structure
Phase Field Modelling of Austenite Grain Growth in the Heat Affected Zone
Phase field simulations of growth and coarsening of electrocatalyst particles
Prefreezing at Heterogeneous Solid-Liquid Interfaces
Pressure-Induced Invar Behavior in Pd3Fe
Quantifying the Strength of Point Defect Based Hydrogen Traps in Bcc and Fcc Iron
Simulating Surface Energy Anisotropy Using Extended Cahn-Hilliard Model
Simulation of Austenite-Martensite Interface and Hysteresis in Microstructures
The Effect of Quenched-In Vacancies on the Kinetics of Coherent Cu-Precipitation in Fe-Cu Alloys
Thermodynamics Calculation and Phase-Field Simulation of Morphotropic Phase Boundary in (001) Bifeo3 Thin Films
Thermodynamics, Structural Properties and Transformation Behavior of CoNiGa Alloys from First Principles
Thinning, Instability and Rupture of Thin Liquid Films in Metal Foam
Twinning Nucleation Mechanisms in Hexagonal-Close-Packed Crystals
Using Size Distributions for Determining Growth Mechanisms of Grain Boundary Precipitates

Questions about ProgramMaster? Contact programming@programmaster.org