Ultrafast high-temperature sintering of gadolinia-doped ceria

被引：18

作者：

Alemayehu, Adam ^{[1
]}

Biesuz, Mattia ^{[2
]}

Javan, Kimia Y. ^{[2
]}

Tkach, Alexander ^{[3
]}

Vilarinho, Paula M. ^{[3
]}

Sglavo, Vincenzo M. ^{[2
,4
]}

Tyrpekl, Vaclav ^{[1
]}

机构：

[1] Charles Univ Prague, Fac Sci, Dept Inorgan Chem, Hlavova 2030-8, Prague 12843, Czech Republic

[2] Univ Trento, Dept Ind Engn, Via Sommar 9, I-38123 Trento, Italy

[3] Univ Aveiro, Aveiro Inst Mat, Dept Mat & Ceram Engn, CICECO, P-3810193 Aveiro, Portugal

[4] Natl Interuniv Consortium Mat Sci & Technol, INSTM, Via G Giusti 9, I-50121 Florence, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2023年 / 43卷 / 11期

关键词：

Ceria; Gadolinia; Oxygen conductor; Ultrafast sintering; ELECTRICAL-CONDUCTIVITY; FLASH; CERAMICS; GD;

D O I：

10.1016/j.jeurceramsoc.2023.04.025

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：

Ultrafast high-temperature sintering (UHS) is a rapidly growing research area of material science and engineering. Herein we present UHS of gadolinia-doped ceria (GDC) powders in single and multi-step approaches. The sintered ceramics were characterized from a physical and electrochemical point of view. When the power is applied gradually during the multistep UHS process crack-free GDC ceramics can be obtained with 95 % bulk density using commercial powder. Oxalate converted GDC powder gave 86 % bulk density with the same multistep sintering process. Additionally, it is shown that multistep UHS is also suitable for multilayer cosintering necessary for solid oxide fuel cells (SOFC), as demonstrated by the production of dense GDC electrolyte in tight contact with porous electrodes.

引用

页码：4837 / 4843

页数：7

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