Modeling of boron carbide oxidation in steam

A simple parametric model has been developed for the simulation of boron carbide oxidation tests at high temperatures done at Forschungszentrum Karlsruhe. The model predicts that an equilibrium oxide film thickness is reached, whose value is only determined by the two rate parameters of the model. Applying the principles of convective mass transfer in coolant channels, one is able to establish the link from the parametric model to a more generalized consideration, which allows to identify the hydrogen surface concentration as a parameter, which is independent of the flow conditions.