Abstract
Modelling of corrosion processes can be undertaken both for prediction of behaviour or for testing of understanding. Models may be based on data, without any theoretical basis (phenomenological or empirical models), on data coupled with some theoretical understanding (semi-empirical models), or completely on theoretical understanding (first principles or ab-initio models). All of these approaches are employed in the nuclear field. Similarly, modelling may be performed over a range of size scales, from atomic dimensions up to metres; one of the major challenges for current work on modelling of corrosion and related processes is multiscale modelling, the coupling of models covering a wide range of size scales.
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