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

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 us...

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Bibliographic Details
Main Authors: Belova, I. V., Ochsner, Andreas, Muthubandara, N., Murch, G. E.
Format: Article
Language:en
Published: Trans Tech Publications 2007
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Online Access:http://eprints.utm.my/9607/1/AndreasOchsner2007_ModellingOfOxygenDiffusion.pdf
http://eprints.utm.my/9607/
http://dx.doi.org/10.4028/www.scientific.net/DDF.266.29
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Summary: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