On the phase relations in the ZrO2–YO1.5–AlO1.5 system

Lakiza, S. M.; Fabrichnaya, Olga; Zinkevich, M.; Aldinger, Fritz

doi:10.1016/j.jallcom.2005.09.079

Cited by 38 publications

(12 citation statements)

References 17 publications

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“…13 Additional experimental study and assessment of thermodynamic parameters of this system was performed in work of Fabrichnaya et al 14 This study allowed to resolve contradiction between experiments and calculations and to establish phase diagram of the ZrO 2 -La 2 O 3 -Al 2 O 3 system. The thermodynamic description of the ZrO 2 -Y 2 O 3 -Al 2 O 3 system consistent with experimental data of Lakiza and Lopato 15 and own experimental results was developed by Lakiza et al 16 and re-optimized in work of Fabrichnaya et al 12 Phase diagram of the ZrO 2 -La 2 O 3 -Y 2 O 3 and La 2 O 3 -Y 2 O 3 -Al 2 O 3 system were calculated based on binary extrapolations. 12 Later phase equilibria in the ZrO 2 -La 2 O 3 -Y 2 O 3 were experimentally studied in works of Fabrichnaya et al 17,18 and advanced thermodynamic modelling of pyrochlore and fluorite phase was performed to derive thermodynamic description compatible with experimental results.…”

Section: Introductionmentioning

confidence: 74%

Phase relations in the ZrO2–La2O3–Y2O3–Al2O3 system: Experimental studies and phase modelling

Fabrichnaya

Savinykh

Schreiber

2013

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 74%

Phase relations in the ZrO2–La2O3–Y2O3–Al2O3 system: Experimental studies and phase modelling

Fabrichnaya

Savinykh

Schreiber

2013

Journal of the European Ceramic Society

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“…[15,22,49] Experimental data are not available for this system. However, if binary extrapolations into the ternary systems provide good agreement with experimental data, requiring only a ternary parameter for the liquid phase, [15,22,49] then it can be also assumed that extrapolations to the quaternary system will provide realistic results as well. The complete set of thermodynamic functions derived in presented study is presented as Table 7 in Appendix.…”

Section: Quaternary Systemmentioning

confidence: 99%

Up-Date of a Thermodynamic Database of the ZrO2-Gd2O3-Y2O3-Al2O3 System for TBC Applications

Fabrichnaya

Seifert

2010

J. Phase Equilib. Diffus.

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The thermodynamic database of the ZrO 2 -Gd 2 O 3 -Y 2 O 3 -Al 2 O 3 system is up-dated taking into account new data on lattice stabilities of ZrO 2 , Gd 2 O 3 and Y 2 O 3 and heat capacity measurements for the monoclinic phase Gd 4 Al 2 O 9 and phase with garnet structure Gd 3 Al 5 O 12 . New data for the heat capacities of Gd 2 Zr 2 O 7 (pyrochlore) and GdAlO 3 (perovskite) as well as on the enthalpy of formation of fluorite solid solutions (Zr 12x Gd x )O 22x/2 were found to be in good agreement with calculated results. In comparison with the previous assessment, taking into account new experimental data resulted in a change of the melting character of the Gd 4 Al 2 O 9 phase from a peritectic one to a congruent one in the Gd 2 O 3 -Al 2 O 3 system. Correspondently, in the ternary system ZrO 2 -Gd 2 O 3 -Al 2 O 3 , the melting character of the three-phase assemblage Gd 2 O 3 (B), Gd 4 Al 2 O 9 and GdAlO 3 changed from eutectic to transition type U. The T 0 -lines for T/M and F/T diffusionless transformations and driving force of partitioning to equilibrium assemblage T + F were calculated in the ZrO 2 -Gd 2 O 3 -Y 2 O 3 system.

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“…The thermodynamic description of the ZrO 2 -Al 2 O 3 systems was adopted from [34] except for the mixing parameters of tetragonal and fluorite phases which were adjusted in the present study because of changes in the thermodynamic description of the ZrO 2 polymorphs [35]. The ZrO 2 -La 2 O 3 system was assessed in the present work taking into account phase relations in the ternary ZrO 2 -La 2 O 3 -Al 2 O 3 system.…”

Section: Binary Systemsmentioning

confidence: 99%