Investigation of high temperature elastic modulus and internal friction of SOFC electrolytes using resonance method

T. Kushi, K. Sato, A. Unemoto, K. Amezawa, T. Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

The Young's modulus, the shear modulus, the Poisson ratio and the internal friction of typical electrolyte materials for SOFC, (Gd2O3) 0.05(CeO2)0.9, (Sm2O 3)0.05, (CeO2)0.9, (Y 2O3)0.08(ZrO2)0.92, (Y2O3)0.1(ZrO2)0.9, (Sc 2O3)0.1(ZrO2)0.9, (Sc2O3)0.9Ce0.01(ZrO 2)0.89 were evaluated by a resonance method. The measurements were carried out from room temperature to 1273 K in flowing pure Ar. The Young's modulus of (Gd2O3)0.05(CeO 2)0.9 and (Sm2O3) 0.05(CeO2)0.9 gradually decreased with increasing temperature as expected for the typical ceramics. However, the Young's modulus of the series of zirconia drastically decreased in the temperature range between 573 K and 873 K, and correspondingly the internal friction increased. Such a characteristic temperature dependence of the mechanical properties was discussed in terms of phase change.

Original languageEnglish
Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages1673-1677
Number of pages5
Edition2 PART 2
DOIs
Publication statusPublished - 2009 Dec 1
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: 2009 Oct 42009 Oct 9

Publication series

NameECS Transactions
Number2 PART 2
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Country/TerritoryAustria
CityVienna
Period09/10/409/10/9

ASJC Scopus subject areas

  • Engineering(all)

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