New MAX-Phase Compounds in the V-Cr-Al-C System

New layered compounds, (V0.5Cr0.5)3AlC2, (V0.5Cr0.5)4AlC3, and (V0.5Cr0.5)5Al2C3 were synthesized by reactive hot pressing V, Cr, Al, and graphite powders. The crystal structures of these new phases were determined using a combination of X‐ray diffraction and scanning transmission electron microscop...

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Veröffentlicht in:	Journal of the American Ceramic Society 2008-04, Vol.91 (4), p.1357-1360
Hauptverfasser:	Zhou, Yanchun, Meng, Fanling, Zhang, Jie
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Applied sciences Building materials. Ceramics. Glasses Ceramic industries Ceramics Chemical compounds Chemical industry and chemicals Crystal structure Diffraction Electron microscopes Exact sciences and technology Graphite Hot pressing Isotopes Materials science Miscellaneous Phases Stacking Technical ceramics
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Zusammenfassung:	New layered compounds, (V0.5Cr0.5)3AlC2, (V0.5Cr0.5)4AlC3, and (V0.5Cr0.5)5Al2C3 were synthesized by reactive hot pressing V, Cr, Al, and graphite powders. The crystal structures of these new phases were determined using a combination of X‐ray diffraction and scanning transmission electron microscopy. (V0.5Cr0.5)3AlC2 is isotypical to Ti3AlC2; while (V0.5Cr0.5)4AlC3 has the Ti4AlN3 or α‐Ta4AlC3‐type crystal structure. (V0.5Cr0.5)5Al2C3 is formed by periodically stacking of half‐unit cells of (V0.5Cr0.5)2AlC and (V0.5Cr0.5)3AlC2.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1551-2916.2008.02279.x