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Computational Materials Engineering by Britta Nestler, Mark A Miodownik, Ernest Kozeschnik, Dierk Raabe, Koenraad Frans Janssens

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5

Modeling Solid-State Diffusion

Ernst Kozeschnik

Diffusion is a phenomenon which we face in everyday life on so many occasions that we rarely take notice of it, and it is a physical process that comes into play in almost all disciplines of CME. Diffusion concerns the transport of manifold things, being either material and easy to recognize or immaterial and sometimes difficult to observe. Diffusion is a phenomenon that can move matter from one place to another as well as properties, information, or knowledge. And diffusion is experienced as a macroscopic phenomenon although the mechanisms of diffusion are founded in microscopic exchange and/or collision processes.

When treating solid-state diffusion, the process of redistribution of matter ...

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