In-Diffusion and Out-Diffusion of Oxygen from a Composite Containing Random Traps

Irina V. Belova; Graeme E. Murch

doi:10.4028/www.scientific.net/SSP.139.35

Paper Titles

Atomistic Simulations of the Aluminum-Silicon Interfaces under Shear Loading
p.1

Shock Loading of Bone-Inspired Metallic Nanocomposites
p.11

Hydrogen Storage in MgH₂ Matrices: An Ab-Initio Study of Mg-MgH₂ Interface
p.23

First-Principles Calculations of the Atomic and Electronic Structures in Au-Pd Slab Interfaces
p.29

In-Diffusion and Out-Diffusion of Oxygen from a Composite Containing Random Traps
p.35

Effects of Supports on Hydrogen Adsorption on Pt Clusters
p.41

First-Principles Calculations of Pd/Au(100) Interfaces with Adsorbates
p.47

In-Plane Rotated Crystal Structure in Continuous Growth of Bismuth Cuprate Superconducting Film
p.53

Dynamical Interaction between Thermally Activated Glide of Screw Dislocation and Self-Interstitial Clusters in Bcc Fe
p.59

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In-Diffusion and Out-Diffusion of Oxygen from a Composite Containing Random Traps

Abstract:

In this paper, we investigate oxygen in-diffusion and out-diffusion with respect to a cermet composite where oxygen segregates at the interface between the metal matrix phase and the ceramic oxide phase. This phenomenological diffusion problem is treated by overlaying it with a fine-grained lattice that was addressed using a Lattice Monte Carlo method and a little-known exact expression for the lattice-based effective diffusivity in the presence of random traps. It is shown that there is very good agreement for the oxygen concentration depth profiles between the Monte Carlo results and the exact expression.