Abstract
We present a detailed study of thermally grown oxide scales on a bulk Ti2AlC material and explore its oxide growth mechanisms at 1000 °C, 1100 °C and 1200 °C, respectively. The oxide scale predominantly consists of an outer TiO2-rich layer and an inner TiO2/Al2O3 mixed layer. The formation of such a duplex microstructure is caused by the phase transformation from Ti2AlC to TiC at the scale/substrate interface and the Al depletion due to the formation of impurities. The insufficient supply of Al to scale/substrate interface, together with the competition from growth of TiO2, prevents formation of a continuous Al2O3 scale.
Original language | English |
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Pages (from-to) | 110393 |
Journal | Corrosion Science |
Volume | 204 |
Early online date | 24 May 2022 |
DOIs | |
Publication status | Published - 1 Aug 2022 |