Effect of Gd2O3 on the thermal conductivity of ZrO2-4 mol.% Y2O3 ceramics fabricated by spark plasma sintering

Byung Koog Jang; Seongwon Kim; Yoon Suk Oh; Hyung Tae Kim; Yoshio Sakka; Hideyuki Murakami

doi:10.1016/j.scriptamat.2013.01.037

Effect of Gd₂O₃ on the thermal conductivity of ZrO₂-4 mol.% Y₂O₃ ceramics fabricated by spark plasma sintering

Byung Koog Jang^*, Seongwon Kim, Yoon Suk Oh, Hyung Tae Kim, Yoshio Sakka, Hideyuki Murakami

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

Porous and dense ZrO₂-4 mol.% Y₂O₃ ceramics were fabricated by spark plasma sintering at 1100 and 1500 °C. The porosity of the ceramics sintered at 1100 °C increased with the addition of ∼0-5 mol.% Gd₂O₃. In contrast, the ceramics sintered at 1500 °C showed full density regardless of the amount of Gd ₂O₃ addition. The fluorite-type Gd₂Zr ₂O₇ phase was formed as the second phase in the tetragonal ZrO₂ matrix. The thermal diffusivity and thermal conductivity of sintered ZrO₂-4 mol.% Y₂O₃ decreased with increasing Gd₂O₃ addition.

Original language	English
Pages (from-to)	165-170
Number of pages	6
Journal	Scripta Materialia
Volume	69
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2013.01.037
Publication status	Published - 2013 Jul
Externally published	Yes

Keywords

Fluorite structure
GdO
GdZrO
Thermal conductivity
ZrO-4 mol.%YO

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2013.01.037

Cite this

@article{e03fb2919edb4c5fbc512f6a4452b1e4,

title = "Effect of Gd2O3 on the thermal conductivity of ZrO2-4 mol.% Y2O3 ceramics fabricated by spark plasma sintering",

abstract = "Porous and dense ZrO2-4 mol.% Y2O3 ceramics were fabricated by spark plasma sintering at 1100 and 1500 °C. The porosity of the ceramics sintered at 1100 °C increased with the addition of ∼0-5 mol.% Gd2O3. In contrast, the ceramics sintered at 1500 °C showed full density regardless of the amount of Gd 2O3 addition. The fluorite-type Gd2Zr 2O7 phase was formed as the second phase in the tetragonal ZrO2 matrix. The thermal diffusivity and thermal conductivity of sintered ZrO2-4 mol.% Y2O3 decreased with increasing Gd2O3 addition.",

keywords = "Fluorite structure, GdO, GdZrO, Thermal conductivity, ZrO-4 mol.%YO",

author = "Jang, {Byung Koog} and Seongwon Kim and Oh, {Yoon Suk} and Kim, {Hyung Tae} and Yoshio Sakka and Hideyuki Murakami",

note = "Funding Information: The work was carried out with financial support from the Korea Institute of Ceramic Engineering and Technology (KICET) and NIMS . Copyright: Copyright 2013 Elsevier B.V., All rights reserved.",

year = "2013",

month = jul,

doi = "10.1016/j.scriptamat.2013.01.037",

language = "English",

volume = "69",

pages = "165--170",

journal = "Scripta Materialia",

issn = "1359-6462",

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T1 - Effect of Gd2O3 on the thermal conductivity of ZrO2-4 mol.% Y2O3 ceramics fabricated by spark plasma sintering

AU - Jang, Byung Koog

AU - Kim, Seongwon

AU - Oh, Yoon Suk

AU - Kim, Hyung Tae

AU - Sakka, Yoshio

AU - Murakami, Hideyuki

N1 - Funding Information: The work was carried out with financial support from the Korea Institute of Ceramic Engineering and Technology (KICET) and NIMS . Copyright: Copyright 2013 Elsevier B.V., All rights reserved.

PY - 2013/7

Y1 - 2013/7

N2 - Porous and dense ZrO2-4 mol.% Y2O3 ceramics were fabricated by spark plasma sintering at 1100 and 1500 °C. The porosity of the ceramics sintered at 1100 °C increased with the addition of ∼0-5 mol.% Gd2O3. In contrast, the ceramics sintered at 1500 °C showed full density regardless of the amount of Gd 2O3 addition. The fluorite-type Gd2Zr 2O7 phase was formed as the second phase in the tetragonal ZrO2 matrix. The thermal diffusivity and thermal conductivity of sintered ZrO2-4 mol.% Y2O3 decreased with increasing Gd2O3 addition.

AB - Porous and dense ZrO2-4 mol.% Y2O3 ceramics were fabricated by spark plasma sintering at 1100 and 1500 °C. The porosity of the ceramics sintered at 1100 °C increased with the addition of ∼0-5 mol.% Gd2O3. In contrast, the ceramics sintered at 1500 °C showed full density regardless of the amount of Gd 2O3 addition. The fluorite-type Gd2Zr 2O7 phase was formed as the second phase in the tetragonal ZrO2 matrix. The thermal diffusivity and thermal conductivity of sintered ZrO2-4 mol.% Y2O3 decreased with increasing Gd2O3 addition.

KW - Fluorite structure

KW - GdO

KW - GdZrO

KW - Thermal conductivity

KW - ZrO-4 mol.%YO

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