期刊
SCRIPTA MATERIALIA
卷 67, 期 10, 页码 830-833出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.07.045
关键词
MAX phases; Oxidation; Microstructure; Ti2AlC
类别
资金
- Lee Family Scholarship
- Engineering and Physical Sciences Research Council [EP/F033605/1] Funding Source: researchfish
- EPSRC [EP/F033605/1] Funding Source: UKRI
The cross-sectional microstructure on Ti2AlC oxidized for 1 h at 900 degrees C was investigated using focused ion beam/transmission electron microscopy. An Al-depleted intermediate layer formed between the oxide scale and the substrate that consisted of nonstoichiometric Ti2AlxC nanocrystallites. The oxide scale consisted of a TiO2-rich outer layer and an Al2O3-rich inner layer. Ti2AlC has been theoretically predicted to preserve its crystal structure down to a sub-stoichiometry of Ti2Al0.5C, and such a Ti2AlxC phase was observed in this study. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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