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Thermally induced substitutional reaction of Fe into Mo2GaC thin films
- Source :
- Materials Research Letters, Vol 5, Iss 8, Pp 533-539 (2017)
- Publication Year :
- 2017
- Publisher :
- Taylor & Francis Group, 2017.
-
Abstract
- The first Fe-based MAX phase is realized by solid-state substitution reaction of an Fe/Au/Mo2GaC thin-film diffusion couple, as determined by X-ray diffraction and scanning transmission electron microscopy. Chemical analysis together with elemental mapping reveals that as much as 50 at.% Fe on the A site can be obtained by thermally induced Au and Fe substitution for Ga atomic layers in Mo2GaC. One-sixth of the original Ga is also replaced by Au atoms. When annealing Mo2GaC thin films covered with Fe only, the Mo2GaC phase remains intact, that is, Au acts as a catalyst for the substitution reaction. IMPACT STATEMENT The first direct evidence showing Fe-containing MAX phase, Mo2AC, with Fe ∼50 at.% on the A sites is presented, synthesized by thermally induced Fe and Au substitution reaction catalyzed by Au.
Details
- Language :
- English
- ISSN :
- 21663831
- Volume :
- 5
- Issue :
- 8
- Database :
- Directory of Open Access Journals
- Journal :
- Materials Research Letters
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.78b2f95faeff4c1097975b474a8c3eb7
- Document Type :
- article
- Full Text :
- https://doi.org/10.1080/21663831.2017.1343207