Reinvestigation of the Ce–Co–Al ternary system: Isothermal section at 973 K

N. Nasri , J. Gastebois (1) , M. Pasturel (1) , B. Belgacem (2) , I. Péron (3) , F. Gouttefangeas (3) , R. Ben Hassen , O. Tougait (1) , H Noël (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 ISSBAT - Unité de Recherche de Chimie des Matériaux
3 C.M.E.B.A. - Centre de Microscopie Electronique à Balayage et microAnalyse

The Ce–Co–Al ternary phase diagram has been reinvestigated at 973 K by means of powder X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and differential thermal analyses. It contains 5 ternary phases (CeCo2Al8, Ce2Co6Al19, CeCoAl4, Ce3Co3Al4 and CeCoAl) as well as 7 extensions in the ternary field of pseudo-binaries (CeAl2−xCox with 0 ⩽ x ⩽ 0.18; CeCo2−xAlx with 0 ⩽ x ⩽ 0.21; CeCo3−yAly with 0 ⩽ y ⩽ 0.20; Ce2Co7−xAlx with 0 ⩽ x ⩽ 0.73; Ce5Co19−yAly with 0 ⩽ y ⩽ 0.20; CeCo5−xAlx with 0 ⩽ x ⩽ 0.71 and Ce2Co17−yAly with 0 ⩽ y ⩽ 2.2). Two liquid areas are present at the Al and Ce-rich corners of this isothermal section

Keywords: Intermetallics; Scanning electron microscopy; Thermal analysis; X-ray diffraction

Domains: Chemical Sciences

N. Nasri, J. Gastebois, M. Pasturel, B. Belgacem, I. Péron, et al.. Reinvestigation of the Ce–Co–Al ternary system: Isothermal section at 973 K. Journal of Alloys and Compounds, 2015, 628, pp.277--281. ⟨10.1016/j.jallcom.2014.12.184⟩. ⟨hal-01224507⟩