Ionic conductivity and its temperature dependence of atmospheric plasma-sprayed yttria stabilized zirconia electrolyte

Chao Zhang; Chang Jiu Li; Ga Zhang; Xian Jin Ning; Cheng Xin Li; Hanlin Liao; Christain Coddet

doi:10.1016/j.mseb.2006.10.005

Ionic conductivity and its temperature dependence of atmospheric plasma-sprayed yttria stabilized zirconia electrolyte

Chao Zhang^*, Chang Jiu Li, Ga Zhang, Xian Jin Ning, Cheng Xin Li, Hanlin Liao, Christain Coddet

^*Corresponding author for this work

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

121 Citations (Scopus)

Abstract

In this study, yttria stabilized zirconia (YSZ) electrolytes were deposited using 8 mol% and 4.5 mol% YSZ powders by atmospheric plasma spraying (APS). The ionic conductivity of the obtained YSZ electrolytes was measured by the means of DC measurement and AC impedance spectroscopy, in a temperature range of 600-1000 °C. The ionic conductivity of 8 mol% YSZ coating is about 50% higher than that of 4.5 mol% YSZ coating. Furthermore, for the same specimen, the ionic conductivity in the parallel direction is about twice higher than that in perpendicular direction. The anisotropy of the ionic conductivity is attributed to the APS coating structure characteristics. In the studied temperature range, a significant temperature dependence of ionic conductivity was observed for the two electrolytes. The traditional Arrhenius equation was employed to analyze the ionic conductivity data and the non-linear Arrhenius behavior was observed. The intragrain-intergrain conductivity model and dissociation-migration energy model were employed to discuss the observed temperature dependency of electrical conductivity of plasma-sprayed YSZ deposits, and the dissociation-migration energy model was more reasonable to explain this temperature dependence.

Original language	English
Pages (from-to)	24-30
Number of pages	7
Journal	Materials Science and Engineering: B
Volume	137
Issue number	1-3
DOIs	https://doi.org/10.1016/j.mseb.2006.10.005
Publication status	Published - 25 Feb 2007
Externally published	Yes

Keywords

Atmospheric plasma spraying
Coating
Electrolyte
Ionic conductivity
Non-linear Arrhenius behavior
Yttria stabilized zirconia

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10.1016/j.mseb.2006.10.005

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@article{48011edd51704814ac62d4ea0db24a19,

title = "Ionic conductivity and its temperature dependence of atmospheric plasma-sprayed yttria stabilized zirconia electrolyte",

abstract = "In this study, yttria stabilized zirconia (YSZ) electrolytes were deposited using 8 mol% and 4.5 mol% YSZ powders by atmospheric plasma spraying (APS). The ionic conductivity of the obtained YSZ electrolytes was measured by the means of DC measurement and AC impedance spectroscopy, in a temperature range of 600-1000 °C. The ionic conductivity of 8 mol% YSZ coating is about 50% higher than that of 4.5 mol% YSZ coating. Furthermore, for the same specimen, the ionic conductivity in the parallel direction is about twice higher than that in perpendicular direction. The anisotropy of the ionic conductivity is attributed to the APS coating structure characteristics. In the studied temperature range, a significant temperature dependence of ionic conductivity was observed for the two electrolytes. The traditional Arrhenius equation was employed to analyze the ionic conductivity data and the non-linear Arrhenius behavior was observed. The intragrain-intergrain conductivity model and dissociation-migration energy model were employed to discuss the observed temperature dependency of electrical conductivity of plasma-sprayed YSZ deposits, and the dissociation-migration energy model was more reasonable to explain this temperature dependence.",

keywords = "Atmospheric plasma spraying, Coating, Electrolyte, Ionic conductivity, Non-linear Arrhenius behavior, Yttria stabilized zirconia",

author = "Chao Zhang and Li, {Chang Jiu} and Ga Zhang and Ning, {Xian Jin} and Li, {Cheng Xin} and Hanlin Liao and Christain Coddet",

year = "2007",

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doi = "10.1016/j.mseb.2006.10.005",

language = "English",

volume = "137",

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journal = "Materials Science and Engineering: B",

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T1 - Ionic conductivity and its temperature dependence of atmospheric plasma-sprayed yttria stabilized zirconia electrolyte

AU - Zhang, Chao

AU - Li, Chang Jiu

AU - Zhang, Ga

AU - Ning, Xian Jin

AU - Li, Cheng Xin

AU - Liao, Hanlin

AU - Coddet, Christain

PY - 2007/2/25

Y1 - 2007/2/25

N2 - In this study, yttria stabilized zirconia (YSZ) electrolytes were deposited using 8 mol% and 4.5 mol% YSZ powders by atmospheric plasma spraying (APS). The ionic conductivity of the obtained YSZ electrolytes was measured by the means of DC measurement and AC impedance spectroscopy, in a temperature range of 600-1000 °C. The ionic conductivity of 8 mol% YSZ coating is about 50% higher than that of 4.5 mol% YSZ coating. Furthermore, for the same specimen, the ionic conductivity in the parallel direction is about twice higher than that in perpendicular direction. The anisotropy of the ionic conductivity is attributed to the APS coating structure characteristics. In the studied temperature range, a significant temperature dependence of ionic conductivity was observed for the two electrolytes. The traditional Arrhenius equation was employed to analyze the ionic conductivity data and the non-linear Arrhenius behavior was observed. The intragrain-intergrain conductivity model and dissociation-migration energy model were employed to discuss the observed temperature dependency of electrical conductivity of plasma-sprayed YSZ deposits, and the dissociation-migration energy model was more reasonable to explain this temperature dependence.

AB - In this study, yttria stabilized zirconia (YSZ) electrolytes were deposited using 8 mol% and 4.5 mol% YSZ powders by atmospheric plasma spraying (APS). The ionic conductivity of the obtained YSZ electrolytes was measured by the means of DC measurement and AC impedance spectroscopy, in a temperature range of 600-1000 °C. The ionic conductivity of 8 mol% YSZ coating is about 50% higher than that of 4.5 mol% YSZ coating. Furthermore, for the same specimen, the ionic conductivity in the parallel direction is about twice higher than that in perpendicular direction. The anisotropy of the ionic conductivity is attributed to the APS coating structure characteristics. In the studied temperature range, a significant temperature dependence of ionic conductivity was observed for the two electrolytes. The traditional Arrhenius equation was employed to analyze the ionic conductivity data and the non-linear Arrhenius behavior was observed. The intragrain-intergrain conductivity model and dissociation-migration energy model were employed to discuss the observed temperature dependency of electrical conductivity of plasma-sprayed YSZ deposits, and the dissociation-migration energy model was more reasonable to explain this temperature dependence.

KW - Atmospheric plasma spraying

KW - Coating

KW - Electrolyte

KW - Ionic conductivity

KW - Non-linear Arrhenius behavior

KW - Yttria stabilized zirconia

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DO - 10.1016/j.mseb.2006.10.005

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SN - 0921-5107

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EP - 30

JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

IS - 1-3

ER -

Ionic conductivity and its temperature dependence of atmospheric plasma-sprayed yttria stabilized zirconia electrolyte

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