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

Byungkoog Jang, Seongwon Kim, Yoon Suk Oh, Hyung Tae Kim, Yoshio Sakka, Hideyuki Murakami

Research output: Contribution to journalArticle

10 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 languageEnglish
Pages (from-to)165-170
Number of pages6
JournalScripta Materialia
Volume69
Issue number2
DOIs
Publication statusPublished - Jul 1 2013

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Spark plasma sintering
Fluorspar
Thermal diffusivity
sparks
Thermal conductivity
sintering
thermal conductivity
Porosity
ceramics
fluorite
thermal diffusivity
porosity
conductivity
matrices

All Science Journal Classification (ASJC) codes

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

Cite this

Effect of Gd2O3 on the thermal conductivity of ZrO2-4 mol.% Y2O3 ceramics fabricated by spark plasma sintering. / Jang, Byungkoog; Kim, Seongwon; Oh, Yoon Suk; Kim, Hyung Tae; Sakka, Yoshio; Murakami, Hideyuki.

In: Scripta Materialia, Vol. 69, No. 2, 01.07.2013, p. 165-170.

Research output: Contribution to journalArticle

Jang, Byungkoog ; Kim, Seongwon ; Oh, Yoon Suk ; Kim, Hyung Tae ; Sakka, Yoshio ; Murakami, Hideyuki. / Effect of Gd2O3 on the thermal conductivity of ZrO2-4 mol.% Y2O3 ceramics fabricated by spark plasma sintering. In: Scripta Materialia. 2013 ; Vol. 69, No. 2. pp. 165-170.
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