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New Solid Solution MAX Phases: (Ti0.5, V0.5)3AlC2, (Nb0.5, V0.5)2AlC, (Nb0.5, V0.5)4AlC3 and (Nb0.8, Zr0.2)2AlC
Journal article   Open access

New Solid Solution MAX Phases: (Ti0.5, V0.5)3AlC2, (Nb0.5, V0.5)2AlC, (Nb0.5, V0.5)4AlC3 and (Nb0.8, Zr0.2)2AlC

M. Naguib, G. W. Bentzel, J. Shah, J. Halim, E. N. Caspi, J. Lu, L. Hultman and M. W. Barsoum
Materials research letters, v 2(4), pp 233-240
02 Oct 2014
url
https://doi.org/10.1080/21663831.2014.932858View
Published, Version of Record (VoR)CC BY-NC V4.0 Open

Abstract

HRTEM Lattice Parameter MAX Phase Rietveld Analysis Solid Solution
We synthesized the following previously unreported aluminum-containing solid solution M n+1 AX n phases: (Ti 0.5 , V 0.5 ) 3 AlC 2 , (Nb 0.5 , V 0.5 ) 2 AlC, (Nb 0.5 , V 0.5 ) 4 AlC 3 and (Nb 0.8 , Zr 0.2 ) 2 AlC. Rietveld analysis of powder X-ray diffraction patterns was used to calculate the lattice parameters and phase fractions. Heating Ti, V, Al and C elemental powders-in the molar ratio of 1.5:1.5:1.3:2-to 1, 450°C for 2 h in flowing argon, resulted in a predominantly phase pure sample of (Ti 0.5 , V 0.5 ) 3 AlC 2 . The other compositions were not as phase pure and further work on optimizing the processing parameters needs to be carried out if phase purity is desired.

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Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
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