Microstructures and mechanical properties of Ce1-xCaxO2-y (x=0.05, 0.1, 0.2) with different sintering temperatures

被引：13

作者：

Yan, M. ^{[1
]}

Mori, T. ^{[1
]}

Zou, J. ^{[2
,3
]}

Huang, H. ^{[2
]}

Drennan, J. ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Fuel Cell Mat Ctr, Tsukuba, Ibaraki 3050044, Japan

[2] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2010年 / 30卷 / 03期

关键词：

Microstructure-final; Mechanical properties; Fuel cells; Sintering; DOPED-CERIA; ELECTRICAL-PROPERTIES; DOPANT CONCENTRATION; FRACTURE-TOUGHNESS; ELASTIC-MODULUS; FUEL-CELL; FILM; ELECTROLYTE; ANODE; CERAMICS;

D O I：

10.1016/j.jeurceramsoc.2009.09.005

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, the microstructures and mechanical properties of Ca-doped CeO2 affected by different sintering temperatures and various dopant concentrations have been systematically investigated. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) revealed that a seemingly individual Ca-doped CeO2 system may consist of multiple types of doped CeO2 phases. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the chemical state of the Cc element is less dependent on the sintering temperature, while increasing the sintering temperature may cause segregation of the Ca elements to form CaO phase. Nanoindentation tests showed that Ca-doped CeO2 has better fracture toughness compared to rare-earth (RE) doped CeO2; the relationship between the sintering temperature and the mechanical property has been discussed. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：669 / 675

页数：7

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