PHASE-EQUILIBRIA IN THE HFO2-Y2O3-LA2O3 TERNARY-SYSTEM

Authors
ANDRIEVSKAYA ER LOPATO LM KOVYLYAEV VV ZAITSEVA ZA
Citation
Er. Andrievskaya et al., PHASE-EQUILIBRIA IN THE HFO2-Y2O3-LA2O3 TERNARY-SYSTEM, Inorganic materials, 32(6), 1996, pp. 645-653
Citations number
33
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
32
Issue
6
Year of publication
1996
Pages
645 - 653
Database
ISI
SICI code
0020-1685(1996)32:6<645:PITHT>2.0.ZU;2-R
Abstract
Phase relationships in the HfO2-Y2O3-La2O3 ternary system were studied at 1250 degrees C over the entire range of compositions. We identifie d 19 phase fields. The system contains solid solutions based on the co nstituent oxides (C-Y2O3, A-La2O3, M-HfO2, F-HfO2) and the intermediat e compounds (La2Hf2O7 LaYO3). La2Hf2O7 is involved in equilibria with all of the phases. At 1250 degrees C, the joins La2Hf2O7-Y2O3 and La2H f2O7-LaYO3 are pseudobinary.