A search for temperature induced time-dependent structural transitions in 10mol%Sc2O3-1mol%CeO2-ZrO2 and 8mol%Y2O3-ZrO2 electrolyte ceramics

Yan Chen; Nina Orlovskaya; E. Andrew Payzant; Thomas Graule; Jakob Kuebler

doi:10.1016/j.jeurceramsoc.2014.08.030

A search for temperature induced time-dependent structural transitions in 10mol%Sc₂O₃-1mol%CeO₂-ZrO₂ and 8mol%Y₂O₃-ZrO₂ electrolyte ceramics

Yan Chen, Nina Orlovskaya, E. Andrew Payzant, Thomas Graule, Jakob Kuebler

Materials Engineering

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

18 Scopus citations

Abstract

Both Sc₂O₃-CeO₂-stabilized-ZrO₂ (SCSZ) and Y₂O₃-stabilized-ZrO₂ (YSZ) show similar Young's modulus damping at 175-400°C and 200-400°C, respectively, by impulse excitation acoustic technique. The phase transition in SCSZ is considered responsible for the damping; however for YSZ, such a phase transition has never been reported. To clarify the relation of damping and structural transition in these two materials, the time-dependent high temperature stabilities are studied by in situ X-ray diffraction, neutron diffraction and Raman scattering during long-term annealing of SCSZ at 350°C and YSZ at 275°C. The cubic-to-rhombohedral transition in SCSZ is detected. However, the existence of t' phase in YSZ raw powders is confirmed without significant changes of the cubic structure during isothermal annealing. It is concluded that the phase transition contributes to the Young's modulus damping in SCSZ, while the structural transition is excluded from the reason for damping in YSZ.

Original language	English
Pages (from-to)	951-958
Number of pages	8
Journal	Journal of the European Ceramic Society
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2014.08.030
State	Published - 2015

Funding

This work was supported by the NSF projects DMR - 0748364 and CMMI - 1030833 . Neutron diffraction and X-ray diffraction were performed at Spallation Neutron Source and Center for Nanophase Materials Sciences, DOE user facilities at Oak Ridge National Laboratory, which are sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy . YC and NO thank Mr. Roland Bächtold for the assist in the mechanical testing in Empa, Swiss National Laboratories for Materials Testing and Research, Duebendorf, Switzerland.

Funders	Funder number
Office of Basic Energy Sciences
Scientific User Facilities Division
National Science Foundation	DMR - 0748364, CMMI - 1030833
U.S. Department of Energy

Keywords

Neutron diffraction
Scandia and ceria stabilized zirconia
X-ray diffraction
Young's modulus
Yttria stabilized zirconia

Access to Document

10.1016/j.jeurceramsoc.2014.08.030

Cite this

@article{2d7060275e104894af859dccf523d771,

title = "A search for temperature induced time-dependent structural transitions in 10mol%Sc2O3-1mol%CeO2-ZrO2 and 8mol%Y2O3-ZrO2 electrolyte ceramics",

abstract = "Both Sc2O3-CeO2-stabilized-ZrO2 (SCSZ) and Y2O3-stabilized-ZrO2 (YSZ) show similar Young's modulus damping at 175-400°C and 200-400°C, respectively, by impulse excitation acoustic technique. The phase transition in SCSZ is considered responsible for the damping; however for YSZ, such a phase transition has never been reported. To clarify the relation of damping and structural transition in these two materials, the time-dependent high temperature stabilities are studied by in situ X-ray diffraction, neutron diffraction and Raman scattering during long-term annealing of SCSZ at 350°C and YSZ at 275°C. The cubic-to-rhombohedral transition in SCSZ is detected. However, the existence of t' phase in YSZ raw powders is confirmed without significant changes of the cubic structure during isothermal annealing. It is concluded that the phase transition contributes to the Young's modulus damping in SCSZ, while the structural transition is excluded from the reason for damping in YSZ.",

keywords = "Neutron diffraction, Scandia and ceria stabilized zirconia, X-ray diffraction, Young's modulus, Yttria stabilized zirconia",

author = "Yan Chen and Nina Orlovskaya and {Andrew Payzant}, E. and Thomas Graule and Jakob Kuebler",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2015",

doi = "10.1016/j.jeurceramsoc.2014.08.030",

language = "English",

volume = "35",

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T1 - A search for temperature induced time-dependent structural transitions in 10mol%Sc2O3-1mol%CeO2-ZrO2 and 8mol%Y2O3-ZrO2 electrolyte ceramics

AU - Chen, Yan

AU - Orlovskaya, Nina

AU - Andrew Payzant, E.

AU - Graule, Thomas

AU - Kuebler, Jakob

PY - 2015

Y1 - 2015

N2 - Both Sc2O3-CeO2-stabilized-ZrO2 (SCSZ) and Y2O3-stabilized-ZrO2 (YSZ) show similar Young's modulus damping at 175-400°C and 200-400°C, respectively, by impulse excitation acoustic technique. The phase transition in SCSZ is considered responsible for the damping; however for YSZ, such a phase transition has never been reported. To clarify the relation of damping and structural transition in these two materials, the time-dependent high temperature stabilities are studied by in situ X-ray diffraction, neutron diffraction and Raman scattering during long-term annealing of SCSZ at 350°C and YSZ at 275°C. The cubic-to-rhombohedral transition in SCSZ is detected. However, the existence of t' phase in YSZ raw powders is confirmed without significant changes of the cubic structure during isothermal annealing. It is concluded that the phase transition contributes to the Young's modulus damping in SCSZ, while the structural transition is excluded from the reason for damping in YSZ.

AB - Both Sc2O3-CeO2-stabilized-ZrO2 (SCSZ) and Y2O3-stabilized-ZrO2 (YSZ) show similar Young's modulus damping at 175-400°C and 200-400°C, respectively, by impulse excitation acoustic technique. The phase transition in SCSZ is considered responsible for the damping; however for YSZ, such a phase transition has never been reported. To clarify the relation of damping and structural transition in these two materials, the time-dependent high temperature stabilities are studied by in situ X-ray diffraction, neutron diffraction and Raman scattering during long-term annealing of SCSZ at 350°C and YSZ at 275°C. The cubic-to-rhombohedral transition in SCSZ is detected. However, the existence of t' phase in YSZ raw powders is confirmed without significant changes of the cubic structure during isothermal annealing. It is concluded that the phase transition contributes to the Young's modulus damping in SCSZ, while the structural transition is excluded from the reason for damping in YSZ.

KW - Neutron diffraction

KW - Scandia and ceria stabilized zirconia

KW - X-ray diffraction

KW - Young's modulus

KW - Yttria stabilized zirconia

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