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

Maxwell T. P. Rigby-Bell; Varun Natu; Maxim Sokol; Daniel J. Kelly; David G. Hopkinson; Yichao Zou; James R. T. Bird; Lee J. Evitts; Matt Smith; Christopher P. Race; Philipp Frankel; Sarah J. Haigh; Michel W. Barsoum

doi:10.1039/D0RA09761F

Synthesis of new M-layer solid-solution 312 MAX phases (Ta_1−xTi_x)₃AlC₂ (x = 0.4, 0.62, 0.75, 0.91 or 0.95), and their corresponding MXenes†

Maxwell T. P. Rigby-Bell,

^a Varun Natu,^b Maxim Sokol,^bc Daniel J. Kelly,^a David G. Hopkinson,^a Yichao Zou,^a James R. T. Bird,

^a Lee J. Evitts,^d Matt Smith,^a Christopher P. Race,^a Philipp Frankel,^a Sarah J. Haigh

*^a and Michel W. Barsoum

*^b

Author affiliations

* Corresponding authors

^a Department of Materials, University of Manchester, Manchester, UK
E-mail: sarah.haigh@manchester.ac.uk

^b Department of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USA
E-mail: barsoumw@drexel.edu

^c Department of Materials Science and Engineering, Tel Aviv University, Ramat Aviv 6997801, Israel

^d Nuclear Futures Institute, Bangor University, Gwynedd, UK

Abstract

Quaternary MAX phases, (Ta_1−xTi_x)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, (Ta_0.38Ti_0.62)₃C₂T_z – 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)₃C₂T_z MXenes with tuneable compositions for a wide range of potential applications.

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Synthesis of new M-layer solid-solution 312 MAX phases (Ta_1−xTi_x)₃AlC₂ (x = 0.4, 0.62, 0.75, 0.91 or 0.95), and their corresponding MXenes†

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Synthesis of new M-layer solid-solution 312 MAX phases (Ta_1−xTi_x)₃AlC₂ (x = 0.4, 0.62, 0.75, 0.91 or 0.95), and their corresponding MXenes

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