Phase Diagram of the Alumina–Zirconia–Samaria System

Lakiza, S. M.; Lopato, L. M.

doi:10.1111/j.1551-2916.2006.01263.x

Cited by 15 publications

(26 citation statements)

References 12 publications

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“…The SmAl 11 O 18 (␤-alumina) found by [31] is most probably metastable. It was not found by Lakiza and Lopato [28] in ternary system. The Sm 2 Zr 2 O 7 phase with pyrochlore structure stable in the ZrO 2 -Sm 2 O 3 system with homogeneity range between 29 and 38 mol.% of Sm 2 O 3 [12] was also indicated in experimental studies of [28].…”

Section: Ternary Systemmentioning

confidence: 55%

“…[23,[36][37][38]. Binary stoichiometric compounds, SmAlO 3 (perovskite) and Sm 4 Al 2 O 9 phase with monoclinic structure are also found in ternary system [28]. The SmAl 11 O 18 (␤-alumina) found by [31] is most probably metastable.…”

Section: Ternary Systemmentioning

confidence: 99%

“…The experimental investigation of the ZrO 2 -Sm 2 O 3 -Al 2 O 3 system indicates the formation of ZrO 2 based tetragonal and monoclinic solid solutions with relatively small solubility of Sm 2 O 3 and Al 2 O 3 [28]. [23,[36][37][38].…”

Section: Ternary Systemmentioning

confidence: 99%

“…The phase relations in the ZrO 2 -Sm 2 O 3 -Al 2 O 3 system were extensively studied experimentally by Lakiza and Lopato [28]. Isothermal sections, vertical sections and the liquidus surface for the ternary system were constructed.…”

Section: Introductionmentioning

confidence: 99%

“…The thermodynamic assessment of the ternary system was not available so far. The aim of this study is to derive thermodynamic database for the ZrO 2 -Sm 2 O 3 -Al 2 O 3 system using experimental data [28], to calculate phase diagrams and to compare them with experimental results. This dataset will be a part of large thermodynamic database for the ZrO 2 -based systems, which can be used to estimate stability of new candidate materials for TBC.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of thermodynamic functions in the ZrO2–Sm2O3–Al2O3 system

Fabrichnaya¹,

Seifert²

2009

Journal of Alloys and Compounds

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a b s t r a c tA thermodynamic database for the ZrO 2 -Sm 2 O 3 -Al 2 O 3 system is derived using CALPHAD approach taking into account experimental data on isothermal sections and liquidus surface. The compound energy formalism and two-sublattice partially ionic liquid model are applied for phase descriptions in the system. Thermodynamic parameters for the binary systems of ZrO 2 -Sm 2 O 3 and Sm 2 O 3 -Al 2 O 3 are assessed in this study based on phase equilibrium and calorimetric data for binary systems taking into account sub-solidus phase relations in the ternary system of ZrO 2 -Sm 2 O 3 -Al 2 O 3 . It is demonstrated that the phase equilibria between solid phases in the ternary ZrO 2 -Sm 2 O 3 -Al 2 O 3 system constrain thermodynamic parameters in the binary systems ZrO 2 -Sm 2 O 3 and Sm 2 O 3 -Al 2 O 3 . The ternary interaction parameter is assessed for the liquid phase using experimental data on the liquidus surface. Isothermal sections at 1523 and 1923 K, the liquidus surface and vertical sections are calculated and compared with available experimental data. The experimental data are generally well reproduced by calculations with exception that in contrast to experimental data a primary crystallisation field for pyrochlore was indicated in calculations. Additionally, differences between experimental and calculated liquidus surface phase diagram were found in the Sm 2 O 3 -rich corner. Because of these differences several inconsistencies were also found for vertical sections.

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Section: Ternary Systemmentioning

confidence: 55%

Section: Ternary Systemmentioning

confidence: 99%

Section: Ternary Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Assessment of thermodynamic functions in the ZrO2–Sm2O3–Al2O3 system

Fabrichnaya¹,

Seifert²

2009

Journal of Alloys and Compounds

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Directionally solidified eutectics in the Al2O3–ZrO2–Ln(Y)2O3 systems (Review)

Lakiza

2009

Powder Metall Met Ceram

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The current status of research on high-temperature composite oxide ceramics in the Al 2 O 3 -ZrO 2 -Ln 2 O 3 systems (Ln are lanthanides, Y) is reviewed. It is emphasized that their use as structural materials at high temperatures (up to 1650°C) is promising. Conditions for growing binary and ternary eutectic composites and their properties are described. Weak and strong aspects of these materials are pointed out. The role of phase diagrams in developing high-temperature in situ composites is shown.

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