The mechanics of interface fracture: (4) room temperature spallation of α-alumina films grown by oxidation

An analytical mechanical model is developed to predict the room temperature spallation behavior, including the separation nucleation, stable and unstable growth, and final spallation and kinking off, of α-alumina films grown by oxidation on Fe-Cr-Al alloy. The predictions from the developed model are compared against experimental results and excellent agreement is observed. The work reveals a completely new failure mechanism of thin layer materials.

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CC BY-NC-ND 4.0