Effects of gallia addition on sintering behavior and electrical conductivity of yttria-doped ceria

Seung Woo Seo; Ji Hoon Park; Min Woo Park; Ji Hoon Koo; Ki Tae Lee; Joo Sin Lee

doi:10.1007/s13391-014-3242-3

Effects of gallia addition on sintering behavior and electrical conductivity of yttria-doped ceria

Seung Woo Seo
, Ji Hoon Park
, Min Woo Park
, Ji Hoon Koo
, Ki Tae Lee
, Joo Sin Lee^*

^*Corresponding author for this work

Electronic Materials Engineering

Kyungsung University
Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

9 Scopus citations

Abstract

The densification behavior and electrical conductivity of Ce_0.8Y_0.2O_1.9 ceramics with gallia concentrations ranging from 0 to 5 mol. % were investigated. The sintered density was found to increase with increasing Ga₂O₃ content up to 1 mol. % and then to decrease upon further Ga₂O₃ addition. Dense Ce_0.8Y_0.2O_1.9 ceramics with 94% of the theoretical density could be obtained by sintering the milled mixture with 1 mol. % Ga₂O₃ addition at 1400°C for 5 h. The conductivity of the 1 mol. % Ga₂O₃-added specimen showed a maximum value of 1.37 × 10^-2 Ω^-1· cm^-1 at 700°C. Pure Ce_0.8Y_0.2O_1.9 ceramics needed to be sintered at 1550°C in order to obtain an equivalent theoretical density and conductivity. The introduction of Ga₂O₃ doping had a good effect on the sintering properties and electrical conductivities of Y₂O₃-doped CeO₂.

Original language	English
Pages (from-to)	791-794
Number of pages	4
Journal	Electronic Materials Letters
Volume	10
Issue number	4
DOIs	https://doi.org/10.1007/s13391-014-3242-3
State	Published - 2014.07

Keywords

electrical conductivity
sintering
yttria-doped ceria

Quacquarelli Symonds(QS) Subject Topics

Materials Science

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10.1007/s13391-014-3242-3

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@article{422ed9af423d4bd39e418f818ec75589,

title = "Effects of gallia addition on sintering behavior and electrical conductivity of yttria-doped ceria",

abstract = "The densification behavior and electrical conductivity of Ce0.8Y0.2O1.9 ceramics with gallia concentrations ranging from 0 to 5 mol. \% were investigated. The sintered density was found to increase with increasing Ga2O3 content up to 1 mol. \% and then to decrease upon further Ga2O3 addition. Dense Ce0.8Y0.2O1.9 ceramics with 94\% of the theoretical density could be obtained by sintering the milled mixture with 1 mol. \% Ga2O3 addition at 1400°C for 5 h. The conductivity of the 1 mol. \% Ga2O3-added specimen showed a maximum value of 1.37 × 10-2 Ω-1· cm-1 at 700°C. Pure Ce0.8Y0.2O1.9 ceramics needed to be sintered at 1550°C in order to obtain an equivalent theoretical density and conductivity. The introduction of Ga2O3 doping had a good effect on the sintering properties and electrical conductivities of Y2O3-doped CeO2.",

keywords = "electrical conductivity, sintering, yttria-doped ceria",

author = "Seo, \{Seung Woo\} and Park, \{Ji Hoon\} and Park, \{Min Woo\} and Koo, \{Ji Hoon\} and Lee, \{Ki Tae\} and Lee, \{Joo Sin\}",

year = "2014",

month = jul,

doi = "10.1007/s13391-014-3242-3",

language = "English",

volume = "10",

pages = "791--794",

journal = "Electronic Materials Letters",

issn = "1738-8090",

number = "4",

}

TY - JOUR

T1 - Effects of gallia addition on sintering behavior and electrical conductivity of yttria-doped ceria

AU - Seo, Seung Woo

AU - Park, Ji Hoon

AU - Park, Min Woo

AU - Koo, Ji Hoon

AU - Lee, Ki Tae

AU - Lee, Joo Sin

PY - 2014/7

Y1 - 2014/7

N2 - The densification behavior and electrical conductivity of Ce0.8Y0.2O1.9 ceramics with gallia concentrations ranging from 0 to 5 mol. % were investigated. The sintered density was found to increase with increasing Ga2O3 content up to 1 mol. % and then to decrease upon further Ga2O3 addition. Dense Ce0.8Y0.2O1.9 ceramics with 94% of the theoretical density could be obtained by sintering the milled mixture with 1 mol. % Ga2O3 addition at 1400°C for 5 h. The conductivity of the 1 mol. % Ga2O3-added specimen showed a maximum value of 1.37 × 10-2 Ω-1· cm-1 at 700°C. Pure Ce0.8Y0.2O1.9 ceramics needed to be sintered at 1550°C in order to obtain an equivalent theoretical density and conductivity. The introduction of Ga2O3 doping had a good effect on the sintering properties and electrical conductivities of Y2O3-doped CeO2.

AB - The densification behavior and electrical conductivity of Ce0.8Y0.2O1.9 ceramics with gallia concentrations ranging from 0 to 5 mol. % were investigated. The sintered density was found to increase with increasing Ga2O3 content up to 1 mol. % and then to decrease upon further Ga2O3 addition. Dense Ce0.8Y0.2O1.9 ceramics with 94% of the theoretical density could be obtained by sintering the milled mixture with 1 mol. % Ga2O3 addition at 1400°C for 5 h. The conductivity of the 1 mol. % Ga2O3-added specimen showed a maximum value of 1.37 × 10-2 Ω-1· cm-1 at 700°C. Pure Ce0.8Y0.2O1.9 ceramics needed to be sintered at 1550°C in order to obtain an equivalent theoretical density and conductivity. The introduction of Ga2O3 doping had a good effect on the sintering properties and electrical conductivities of Y2O3-doped CeO2.

KW - electrical conductivity

KW - sintering

KW - yttria-doped ceria

UR - https://www.scopus.com/pages/publications/84905374641

U2 - 10.1007/s13391-014-3242-3

DO - 10.1007/s13391-014-3242-3

M3 - Journal article

AN - SCOPUS:84905374641

SN - 1738-8090

VL - 10

SP - 791

EP - 794

JO - Electronic Materials Letters

JF - Electronic Materials Letters

IS - 4

ER -

Effects of gallia addition on sintering behavior and electrical conductivity of yttria-doped ceria

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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