Characterization of atmospheric plasma-sprayed Sc2O3-ZrO2 electrolyte coating

Cheng Xin Li; Chang Jiu Li; Hui Guo Long; Ya Zhe Xing; Xian Jin Ning; Chao Zhang; Han Lin Liao; C. Coddet

doi:10.1016/j.ssi.2006.03.034

Characterization of atmospheric plasma-sprayed Sc₂O₃-ZrO₂ electrolyte coating

Cheng Xin Li, Chang Jiu Li^*, Hui Guo Long, Ya Zhe Xing, Xian Jin Ning, Chao Zhang, Han Lin Liao, C. Coddet

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

Sc₂O₃ stabilized ZrO₂ (ScSZ) coating in free standing planar shape was prepared by atmospheric plasma spraying (APS) using ScSZ powder consisting of 10 mol% Sc₂O₃. ScSZ powder was prepared by solid phase reaction followed by sintering and screening processes. The coating microstructure was characterized using X-ray diffraction and scanning electron microscopy. The electrical conductivity of ScSZ coating was measured using both DC and AC approaches. The electrical conductivity of the as-sprayed ScSZ coating was about 0.07 S/cm at 1000 °C. It is one-fourth that of the sintered one. This result is due to the lamellar structure feature with the limited interface bonding which dominates the electrical conductivity of APS coatings. The activation energy of the as-sprayed coating was 1.31 eV at temperature range less than 750 °C and 0.97 eV at above 750 °C. The change of activation energy indicates that the ion transportation dominants are changed with temperature. This fact is due to higher activation energy of the grain boundary than that of intragrain.

Original language	English
Pages (from-to)	2149-2153
Number of pages	5
Journal	Solid State Ionics
Volume	177
Issue number	19-25 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.ssi.2006.03.034
Publication status	Published - 15 Oct 2006
Externally published	Yes

Keywords

Coating
Electrical conductivity
Electrolyte
Plasma spraying
Scandia-stabilized zirconia (ScSZ)
Solid oxide fuel cell

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10.1016/j.ssi.2006.03.034

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title = "Characterization of atmospheric plasma-sprayed Sc2O3-ZrO2 electrolyte coating",

abstract = "Sc2O3 stabilized ZrO2 (ScSZ) coating in free standing planar shape was prepared by atmospheric plasma spraying (APS) using ScSZ powder consisting of 10 mol\% Sc2O3. ScSZ powder was prepared by solid phase reaction followed by sintering and screening processes. The coating microstructure was characterized using X-ray diffraction and scanning electron microscopy. The electrical conductivity of ScSZ coating was measured using both DC and AC approaches. The electrical conductivity of the as-sprayed ScSZ coating was about 0.07 S/cm at 1000 °C. It is one-fourth that of the sintered one. This result is due to the lamellar structure feature with the limited interface bonding which dominates the electrical conductivity of APS coatings. The activation energy of the as-sprayed coating was 1.31 eV at temperature range less than 750 °C and 0.97 eV at above 750 °C. The change of activation energy indicates that the ion transportation dominants are changed with temperature. This fact is due to higher activation energy of the grain boundary than that of intragrain.",

keywords = "Coating, Electrical conductivity, Electrolyte, Plasma spraying, Scandia-stabilized zirconia (ScSZ), Solid oxide fuel cell",

author = "Li, \{Cheng Xin\} and Li, \{Chang Jiu\} and Long, \{Hui Guo\} and Xing, \{Ya Zhe\} and Ning, \{Xian Jin\} and Chao Zhang and Liao, \{Han Lin\} and C. Coddet",

year = "2006",

month = oct,

day = "15",

doi = "10.1016/j.ssi.2006.03.034",

language = "English",

volume = "177",

pages = "2149--2153",

journal = "Solid State Ionics",

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TY - JOUR

T1 - Characterization of atmospheric plasma-sprayed Sc2O3-ZrO2 electrolyte coating

AU - Li, Cheng Xin

AU - Li, Chang Jiu

AU - Long, Hui Guo

AU - Xing, Ya Zhe

AU - Ning, Xian Jin

AU - Zhang, Chao

AU - Liao, Han Lin

AU - Coddet, C.

PY - 2006/10/15

Y1 - 2006/10/15

N2 - Sc2O3 stabilized ZrO2 (ScSZ) coating in free standing planar shape was prepared by atmospheric plasma spraying (APS) using ScSZ powder consisting of 10 mol% Sc2O3. ScSZ powder was prepared by solid phase reaction followed by sintering and screening processes. The coating microstructure was characterized using X-ray diffraction and scanning electron microscopy. The electrical conductivity of ScSZ coating was measured using both DC and AC approaches. The electrical conductivity of the as-sprayed ScSZ coating was about 0.07 S/cm at 1000 °C. It is one-fourth that of the sintered one. This result is due to the lamellar structure feature with the limited interface bonding which dominates the electrical conductivity of APS coatings. The activation energy of the as-sprayed coating was 1.31 eV at temperature range less than 750 °C and 0.97 eV at above 750 °C. The change of activation energy indicates that the ion transportation dominants are changed with temperature. This fact is due to higher activation energy of the grain boundary than that of intragrain.

AB - Sc2O3 stabilized ZrO2 (ScSZ) coating in free standing planar shape was prepared by atmospheric plasma spraying (APS) using ScSZ powder consisting of 10 mol% Sc2O3. ScSZ powder was prepared by solid phase reaction followed by sintering and screening processes. The coating microstructure was characterized using X-ray diffraction and scanning electron microscopy. The electrical conductivity of ScSZ coating was measured using both DC and AC approaches. The electrical conductivity of the as-sprayed ScSZ coating was about 0.07 S/cm at 1000 °C. It is one-fourth that of the sintered one. This result is due to the lamellar structure feature with the limited interface bonding which dominates the electrical conductivity of APS coatings. The activation energy of the as-sprayed coating was 1.31 eV at temperature range less than 750 °C and 0.97 eV at above 750 °C. The change of activation energy indicates that the ion transportation dominants are changed with temperature. This fact is due to higher activation energy of the grain boundary than that of intragrain.

KW - Coating

KW - Electrical conductivity

KW - Electrolyte

KW - Plasma spraying

KW - Scandia-stabilized zirconia (ScSZ)

KW - Solid oxide fuel cell

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DO - 10.1016/j.ssi.2006.03.034

M3 - Article

AN - SCOPUS:33750002955

SN - 0167-2738

VL - 177

SP - 2149

EP - 2153

JO - Solid State Ionics

JF - Solid State Ionics

IS - 19-25 SPEC. ISS.

ER -

Characterization of atmospheric plasma-sprayed Sc₂O₃-ZrO₂ electrolyte coating

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