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Phase Relations in the System Ce 2 O 3 –Al 2 O 3 in Inert and Reducing Atmospheres
Author(s) -
Tas A. Cuneyt,
Akinc Mufit
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb04531.x
Subject(s) - tetragonal crystal system , crystallography , eutectic system , hexagonal crystal system , perovskite (structure) , lattice (music) , materials science , microstructure , solid solution , crystal structure , chemistry , mineralogy , analytical chemistry (journal) , physics , metallurgy , acoustics , chromatography
The 1:1 compound, CeA1O 3 , in the system Ce 2 O 3 –Al 2 O 3 has been synthesized from the oxides and shown to have a perovskite‐like tetragonal unit cell with the lattice parameters a = 3.763 and c = 3.792 Å. A new XRD pattern is suggested for CeA1O 3 . This compound is shown to be stable up to 1950°C. The 1:11 compound, CeAl 11 O 18 , has also been synthesized and shown to possess a magnetoplumbite‐like hexagonal unit cell with the lattice parameters α= 5.558 and c = 22.012 å. An XRD pattern is suggested for CeAl 11 O 18 for the first time. The evolution of eutectic‐like microstructures was observed and reported in the Ce 2 O 3 ‐rich side of this binary system.