Improving the ionic conductivity of yttria-stabilised zirconia electrolyte materials

Toshiyuki Mori, John Drennan, Jong Heun Lee, Ji Guaang Li, Takayasu Ikegami

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Low-temperature anneals (1200 °C for 40 h) of 8 mol% yttria-stabilised zirconia, prior to the samples being sintered at 1500 °C, had the effect of improving the ionic conductivity of the specimens. The presence of SiO2 in the specimens was shown to be detrimental, however. Irrespective of the SiO2 content, this type of heat treatment also leads to improvements in conductivity. Extensive microstructural analysis provided indication of the mechanism of this phenomenon. This included selective formation of zircon, relief of sintering strain leading to the formation of coherent grain boundaries and segregation effects.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalSolid State Ionics
Volume154-155
DOIs
Publication statusPublished - 2002 Dec 2
Externally publishedYes

Fingerprint

Zircon
Yttria stabilized zirconia
Ionic conductivity
yttria-stabilized zirconia
ion currents
Electrolytes
Grain boundaries
Sintering
Heat treatment
electrolytes
sintering
indication
heat treatment
grain boundaries
conductivity
Temperature
zircon

Keywords

  • Diffuse scatter
  • Grain boundaries
  • Ionic conductivity
  • Yttria-stabilised zirconia

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Improving the ionic conductivity of yttria-stabilised zirconia electrolyte materials. / Mori, Toshiyuki; Drennan, John; Lee, Jong Heun; Li, Ji Guaang; Ikegami, Takayasu.

In: Solid State Ionics, Vol. 154-155, 02.12.2002, p. 529-533.

Research output: Contribution to journalArticle

Mori, Toshiyuki ; Drennan, John ; Lee, Jong Heun ; Li, Ji Guaang ; Ikegami, Takayasu. / Improving the ionic conductivity of yttria-stabilised zirconia electrolyte materials. In: Solid State Ionics. 2002 ; Vol. 154-155. pp. 529-533.
@article{96eb691abab342b0a2b3bce333429590,
title = "Improving the ionic conductivity of yttria-stabilised zirconia electrolyte materials",
abstract = "Low-temperature anneals (1200 °C for 40 h) of 8 mol{\%} yttria-stabilised zirconia, prior to the samples being sintered at 1500 °C, had the effect of improving the ionic conductivity of the specimens. The presence of SiO2 in the specimens was shown to be detrimental, however. Irrespective of the SiO2 content, this type of heat treatment also leads to improvements in conductivity. Extensive microstructural analysis provided indication of the mechanism of this phenomenon. This included selective formation of zircon, relief of sintering strain leading to the formation of coherent grain boundaries and segregation effects.",
keywords = "Diffuse scatter, Grain boundaries, Ionic conductivity, Yttria-stabilised zirconia",
author = "Toshiyuki Mori and John Drennan and Lee, {Jong Heun} and Li, {Ji Guaang} and Takayasu Ikegami",
year = "2002",
month = "12",
day = "2",
doi = "10.1016/S0167-2738(02)00508-8",
language = "English",
volume = "154-155",
pages = "529--533",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",

}

TY - JOUR

T1 - Improving the ionic conductivity of yttria-stabilised zirconia electrolyte materials

AU - Mori, Toshiyuki

AU - Drennan, John

AU - Lee, Jong Heun

AU - Li, Ji Guaang

AU - Ikegami, Takayasu

PY - 2002/12/2

Y1 - 2002/12/2

N2 - Low-temperature anneals (1200 °C for 40 h) of 8 mol% yttria-stabilised zirconia, prior to the samples being sintered at 1500 °C, had the effect of improving the ionic conductivity of the specimens. The presence of SiO2 in the specimens was shown to be detrimental, however. Irrespective of the SiO2 content, this type of heat treatment also leads to improvements in conductivity. Extensive microstructural analysis provided indication of the mechanism of this phenomenon. This included selective formation of zircon, relief of sintering strain leading to the formation of coherent grain boundaries and segregation effects.

AB - Low-temperature anneals (1200 °C for 40 h) of 8 mol% yttria-stabilised zirconia, prior to the samples being sintered at 1500 °C, had the effect of improving the ionic conductivity of the specimens. The presence of SiO2 in the specimens was shown to be detrimental, however. Irrespective of the SiO2 content, this type of heat treatment also leads to improvements in conductivity. Extensive microstructural analysis provided indication of the mechanism of this phenomenon. This included selective formation of zircon, relief of sintering strain leading to the formation of coherent grain boundaries and segregation effects.

KW - Diffuse scatter

KW - Grain boundaries

KW - Ionic conductivity

KW - Yttria-stabilised zirconia

UR - http://www.scopus.com/inward/record.url?scp=0037011326&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037011326&partnerID=8YFLogxK

U2 - 10.1016/S0167-2738(02)00508-8

DO - 10.1016/S0167-2738(02)00508-8

M3 - Article

VL - 154-155

SP - 529

EP - 533

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -