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Modelling of oxygen diffusion and segregation at interfaces in Ag-MgO composites

Ochsner, Andreas and Belova, I. V. and Muthubandara, N. and Murch, G. E. (2007) Modelling of oxygen diffusion and segregation at interfaces in Ag-MgO composites. Defect and Diffusion Forum, 266 . pp. 29-38. ISSN 1012-0386

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/DDF.2...

Abstract

The presence of atomic oxygen at internal metal-ceramic oxide interfaces significantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material. This problem is addressed for the model composite system Ag-MgO from a phenomenological point of view using a lattice-based Monte Carlo method and a finite element method extended with special user-subroutines. We simulate the time dependence of oxygen depth and contour profiles. We are able to show very good agreement between these two methods

Item Type:Article
Additional Information:Vol 266 : Diffusion in Advanced Materials and Processing
Uncontrolled Keywords:segregation, diffusion, finite element method, interfaces, composites
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:9607
Deposited By: Salasiah M Said
Deposited On:06 Jan 2010 07:59
Last Modified:02 Jun 2010 02:01

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