Synthesis of new M-layer solid-solution 312 MAX phases (Ta1−xTix)3AlC2 (x = 0.4, 0.62, 0.75, 0.91 or 0.95), and their corresponding MXenes

Quaternary MAX phases, (Ta1−xTix)3AlC2 (x = 0.4, 0.62, 0.75, 0.91 or 0.95), have been synthesised via pressureless sintering of TaC, TiC, Ti and Al powders. Via chemical etching of the Al layers, (Ta0.38Ti0.62)3C2Tz – a new MXene, has also been synthesised. All materials contain an M-layer solid sol...

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Bibliographic Details
Published in:RSC advances 2021-01, Vol.11 (5), p.3110-3114
Main Authors: Rigby-Bell, Maxwell T P, Natu, Varun, Sokol, Maxim, Kelly, Daniel J, Hopkinson, David G, Zou, Yichao, Bird, James R T, Evitts, Lee J, Smith, Matt, Race, Christopher P, Frankel, Philipp, Haigh, Sarah J, Barsoum, Michel W
Format: Article
Language:English
Subjects:
Alloying
Aluminum
Chemical etching
Crystallography
Loose powder sintering
MXenes
Solid solutions
Synthesis
Titanium carbide
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Summary:Quaternary MAX phases, (Ta1−xTix)3AlC2 (x = 0.4, 0.62, 0.75, 0.91 or 0.95), have been synthesised via pressureless sintering of TaC, TiC, Ti and Al powders. Via chemical etching of the Al layers, (Ta0.38Ti0.62)3C2Tz – a new MXene, has also been synthesised. All materials contain an M-layer solid solution of Ta and Ti, with a variable Ta concentration, paving the way for the synthesis of a range of alloyed (Ta,Ti)3C2Tz MXenes with tuneable compositions for a wide range of potential applications.
ISSN:2046-2069
DOI:10.1039/d0ra09761f