Prediction of Mechanical Scale Failure - Current Status and Perspectives

M. Schütze, M. Rudolphi

A new model concept for predicting mechanical oxide scale failure is applied to Al2O3, Cr2O3, Fe3O4 and NiO. The calculated critical strain values are plotted versus the physical defect size using a simplified version of the original h-w-concept. A limited number of experimental data existing in the literature were entered into the plots and yield satisfactory agreement with the model data. Future efforts should focus on extending the experimental data basis and converting these data into h-values for the model.

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