Fracture properties of (CeO2)1-x(RO 1.5)x (R = Y, Gd, and Sm; X = 0.02-0.20) ceramics

T. Ishida; F. Iguchi; K. Sato; T. Hashida; H. Yugami

doi:10.1016/j.ssi.2005.06.031

Fracture properties of (CeO₂)_1-x(RO _1.5)_x (R = Y, Gd, and Sm; X = 0.02-0.20) ceramics

T. Ishida, F. Iguchi, K. Sato, T. Hashida, H. Yugami

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

34 Citations (Scopus)

Abstract

The fracture properties of rare earth (yttrium, gadolinium, and samarium) doped ceria ceramics were systematically investigated using the modified small punch method at room temperature in air and at high temperatures in argon gas. The samples prepared by oxalate co-precipitation method showed higher fracture strength than those by solid-state reaction method. In addition, the sintering temperature dependence of gadolinium doped ceria indicated that the highest fracture strength was attained by sintering at 1600 °C. Furthermore, it turned out that the fracture strength was influenced by the dopant concentration rather than the kind of dopant. The relationship between mechanical properties and defect structures are discussed from the dopant concentration, sintering temperature and testing temperature dependence of the fracture strength.

Original language	English
Pages (from-to)	2417-2421
Number of pages	5
Journal	Solid State Ionics
Volume	176
Issue number	31-34
DOIs	https://doi.org/10.1016/j.ssi.2005.06.031
Publication status	Published - 2005 Oct
Event	30th Symposium on Solid State Ionics in Japan - Duration: 2004 Dec 1 → 2004 Dec 3

Keywords

CeO
Fracture strength
Mechanical properties
Rare earth doped ceria
SOFC
SP test

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.ssi.2005.06.031

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title = "Fracture properties of (CeO2)1-x(RO 1.5)x (R = Y, Gd, and Sm; X = 0.02-0.20) ceramics",

abstract = "The fracture properties of rare earth (yttrium, gadolinium, and samarium) doped ceria ceramics were systematically investigated using the modified small punch method at room temperature in air and at high temperatures in argon gas. The samples prepared by oxalate co-precipitation method showed higher fracture strength than those by solid-state reaction method. In addition, the sintering temperature dependence of gadolinium doped ceria indicated that the highest fracture strength was attained by sintering at 1600 °C. Furthermore, it turned out that the fracture strength was influenced by the dopant concentration rather than the kind of dopant. The relationship between mechanical properties and defect structures are discussed from the dopant concentration, sintering temperature and testing temperature dependence of the fracture strength.",

keywords = "CeO, Fracture strength, Mechanical properties, Rare earth doped ceria, SOFC, SP test",

author = "T. Ishida and F. Iguchi and K. Sato and T. Hashida and H. Yugami",

note = "Funding Information: This research was partially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research on Priority Areas (No. 439). The authors appreciate Mr. Y. Endo for his experimental work at the early stage of this work. The authors are also grateful Dr. K. Sato for useful discussions on fractural properties of ceramics.; 30th Symposium on Solid State Ionics in Japan ; Conference date: 01-12-2004 Through 03-12-2004",

year = "2005",

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doi = "10.1016/j.ssi.2005.06.031",

language = "English",

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TY - JOUR

T1 - Fracture properties of (CeO2)1-x(RO 1.5)x (R = Y, Gd, and Sm; X = 0.02-0.20) ceramics

AU - Ishida, T.

AU - Iguchi, F.

AU - Sato, K.

AU - Hashida, T.

AU - Yugami, H.

N1 - Funding Information: This research was partially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research on Priority Areas (No. 439). The authors appreciate Mr. Y. Endo for his experimental work at the early stage of this work. The authors are also grateful Dr. K. Sato for useful discussions on fractural properties of ceramics.

PY - 2005/10

Y1 - 2005/10

N2 - The fracture properties of rare earth (yttrium, gadolinium, and samarium) doped ceria ceramics were systematically investigated using the modified small punch method at room temperature in air and at high temperatures in argon gas. The samples prepared by oxalate co-precipitation method showed higher fracture strength than those by solid-state reaction method. In addition, the sintering temperature dependence of gadolinium doped ceria indicated that the highest fracture strength was attained by sintering at 1600 °C. Furthermore, it turned out that the fracture strength was influenced by the dopant concentration rather than the kind of dopant. The relationship between mechanical properties and defect structures are discussed from the dopant concentration, sintering temperature and testing temperature dependence of the fracture strength.

AB - The fracture properties of rare earth (yttrium, gadolinium, and samarium) doped ceria ceramics were systematically investigated using the modified small punch method at room temperature in air and at high temperatures in argon gas. The samples prepared by oxalate co-precipitation method showed higher fracture strength than those by solid-state reaction method. In addition, the sintering temperature dependence of gadolinium doped ceria indicated that the highest fracture strength was attained by sintering at 1600 °C. Furthermore, it turned out that the fracture strength was influenced by the dopant concentration rather than the kind of dopant. The relationship between mechanical properties and defect structures are discussed from the dopant concentration, sintering temperature and testing temperature dependence of the fracture strength.

KW - CeO

KW - Fracture strength

KW - Mechanical properties

KW - Rare earth doped ceria

KW - SOFC

KW - SP test

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DO - 10.1016/j.ssi.2005.06.031

M3 - Conference article

AN - SCOPUS:25444529680

VL - 176

SP - 2417

EP - 2421

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 31-34

T2 - 30th Symposium on Solid State Ionics in Japan

Y2 - 1 December 2004 through 3 December 2004

ER -