Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu2O3, Y2O3 and Gd2O3) stabilised cubic hafnia

L. Sévin; L. Audouard; V. Razafindramanana; F. Mauvy; L. Galzin; J. F. Justin; P. Bertrand; C. Langlade; M. Garcia; A. Julian-Jankowiak

doi:10.1016/j.jeurceramsoc.2023.03.006

Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu₂O₃, Y₂O₃ and Gd₂O₃) stabilised cubic hafnia

L. Sévin
, L. Audouard
, V. Razafindramanana
, F. Mauvy
, L. Galzin
, J. F. Justin
, P. Bertrand
, C. Langlade
, M. Garcia
, A. Julian-Jankowiak

ONERA Office National d'Etudes et Recherches Aerospatiales
FEMTO-ST, UMR CNRS 6174, Université de Franche Comté
Centre National d'études Spatiales
Univ. Bordeaux

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

For satellite propulsion, new material are developed to sustain harsh thermal and environmental conditions in the combustion chambers induced by the development of new “green” propellants less toxic than currently used hydrazine. In the present study, hafnia-based materials with different amounts and natures of stabilisers (Lu₂O₃, Y₂O₃ and Gd₂O₃) have been chosen for the ceramic part of the system. Microstructures, Thermal Expansion Coefficients (373–1673 K) and ionic conductivities (600–1273 K) of synthesised fully stabilised fluorite phases have been investigated. Lattice parameters have been determined and an abacus has been proposed as a function of the amount of RE₂O₃ and the ionic radius of the Rare Earth cation (RE³⁺). Moreover, it has been observed a TECs decrease from 14 to 40 mol% of RE₂O₃ and few changes in the ionic conductivity above 33 mol% of RE₂O₃. Finally, addition of Lu₂O₃ allows to reach the lowest TEC and ionic conductivity.

Original language	English
Pages (from-to)	4153-4166
Number of pages	14
Journal	Journal of the European Ceramic Society
Volume	43
Issue number	9
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2023.03.006
Publication status	Published - 1 Aug 2023
Externally published	Yes

Keywords

Environmental Barrier Coating (EBC)
Fluorite
HfO
Ionic conductivity
Rare Earth Oxide
Thermal Expansion Coefficient (TEC)

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10.1016/j.jeurceramsoc.2023.03.006

Cite this

Sévin, L., Audouard, L., Razafindramanana, V., Mauvy, F., Galzin, L., Justin, J. F., Bertrand, P., Langlade, C., Garcia, M., & Julian-Jankowiak, A. (2023). Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu₂O₃, Y₂O₃ and Gd₂O₃) stabilised cubic hafnia. Journal of the European Ceramic Society, 43(9), 4153-4166. https://doi.org/10.1016/j.jeurceramsoc.2023.03.006

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title = "Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu2O3, Y2O3 and Gd2O3) stabilised cubic hafnia",

abstract = "For satellite propulsion, new material are developed to sustain harsh thermal and environmental conditions in the combustion chambers induced by the development of new {\textquotedblleft}green{\textquotedblright} propellants less toxic than currently used hydrazine. In the present study, hafnia-based materials with different amounts and natures of stabilisers (Lu2O3, Y2O3 and Gd2O3) have been chosen for the ceramic part of the system. Microstructures, Thermal Expansion Coefficients (373{\textendash}1673 K) and ionic conductivities (600{\textendash}1273 K) of synthesised fully stabilised fluorite phases have been investigated. Lattice parameters have been determined and an abacus has been proposed as a function of the amount of RE2O3 and the ionic radius of the Rare Earth cation (RE3+). Moreover, it has been observed a TECs decrease from 14 to 40 mol\% of RE2O3 and few changes in the ionic conductivity above 33 mol\% of RE2O3. Finally, addition of Lu2O3 allows to reach the lowest TEC and ionic conductivity.",

keywords = "Environmental Barrier Coating (EBC), Fluorite, HfO, Ionic conductivity, Rare Earth Oxide, Thermal Expansion Coefficient (TEC)",

author = "L. S{\'e}vin and L. Audouard and V. Razafindramanana and F. Mauvy and L. Galzin and Justin, \{J. F.\} and P. Bertrand and C. Langlade and M. Garcia and A. Julian-Jankowiak",

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doi = "10.1016/j.jeurceramsoc.2023.03.006",

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Sévin, L, Audouard, L, Razafindramanana, V, Mauvy, F, Galzin, L, Justin, JF, Bertrand, P, Langlade, C, Garcia, M & Julian-Jankowiak, A 2023, 'Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu₂O₃, Y₂O₃ and Gd₂O₃) stabilised cubic hafnia', Journal of the European Ceramic Society, vol. 43, no. 9, pp. 4153-4166. https://doi.org/10.1016/j.jeurceramsoc.2023.03.006

TY - JOUR

T1 - Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu2O3, Y2O3 and Gd2O3) stabilised cubic hafnia

AU - Sévin, L.

AU - Audouard, L.

AU - Razafindramanana, V.

AU - Mauvy, F.

AU - Galzin, L.

AU - Justin, J. F.

AU - Bertrand, P.

AU - Langlade, C.

AU - Garcia, M.

AU - Julian-Jankowiak, A.

PY - 2023/8/1

Y1 - 2023/8/1

N2 - For satellite propulsion, new material are developed to sustain harsh thermal and environmental conditions in the combustion chambers induced by the development of new “green” propellants less toxic than currently used hydrazine. In the present study, hafnia-based materials with different amounts and natures of stabilisers (Lu2O3, Y2O3 and Gd2O3) have been chosen for the ceramic part of the system. Microstructures, Thermal Expansion Coefficients (373–1673 K) and ionic conductivities (600–1273 K) of synthesised fully stabilised fluorite phases have been investigated. Lattice parameters have been determined and an abacus has been proposed as a function of the amount of RE2O3 and the ionic radius of the Rare Earth cation (RE3+). Moreover, it has been observed a TECs decrease from 14 to 40 mol% of RE2O3 and few changes in the ionic conductivity above 33 mol% of RE2O3. Finally, addition of Lu2O3 allows to reach the lowest TEC and ionic conductivity.

AB - For satellite propulsion, new material are developed to sustain harsh thermal and environmental conditions in the combustion chambers induced by the development of new “green” propellants less toxic than currently used hydrazine. In the present study, hafnia-based materials with different amounts and natures of stabilisers (Lu2O3, Y2O3 and Gd2O3) have been chosen for the ceramic part of the system. Microstructures, Thermal Expansion Coefficients (373–1673 K) and ionic conductivities (600–1273 K) of synthesised fully stabilised fluorite phases have been investigated. Lattice parameters have been determined and an abacus has been proposed as a function of the amount of RE2O3 and the ionic radius of the Rare Earth cation (RE3+). Moreover, it has been observed a TECs decrease from 14 to 40 mol% of RE2O3 and few changes in the ionic conductivity above 33 mol% of RE2O3. Finally, addition of Lu2O3 allows to reach the lowest TEC and ionic conductivity.

KW - Environmental Barrier Coating (EBC)

KW - Fluorite

KW - HfO

KW - Ionic conductivity

KW - Rare Earth Oxide

KW - Thermal Expansion Coefficient (TEC)

UR - https://www.scopus.com/pages/publications/85150011267

U2 - 10.1016/j.jeurceramsoc.2023.03.006

DO - 10.1016/j.jeurceramsoc.2023.03.006

M3 - Article

AN - SCOPUS:85150011267

SN - 0955-2219

VL - 43

SP - 4153

EP - 4166

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 9

ER -

Phase stabilisation, thermal expansion and ionic conductivity of high content rare earth oxide (Lu₂O₃, Y₂O₃ and Gd₂O₃) stabilised cubic hafnia

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Keywords

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