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Formation and Properties of 2Tb 2 O 3 · Al 2 O 3
Author(s) -
Jero Paul D.,
Kriven Waltraud M.
Publication year - 1988
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.1151-2916.1988.tb07545.x
Subject(s) - materials science , thermal expansion , indentation , x ray crystallography , diffraction , crystallography , analytical chemistry (journal) , mineralogy , chemistry , composite material , optics , physics , chromatography
The compound 2Tb 2 O 3 · Al 2 O 3 was fabricated, and selected properties were investigated. The room‐temperature X‐ray diffraction pattern was indexed and the lattice parameters were calculated. Powder density was determined and used to calculate the number of molecules per unit cell (Z). This allowed calculation of a theoretical density. The material was characterized with regard to thermal expansion and indentation hardness and toughness. It was found to exhibit a rapid and reversible polymorphic transformation at high temperature.