Microwave sintering of Ge-doped In2O3 thermoelectric ceramics prepared by slip casting process

被引：23
作者：
Combe, E. [1 ,2 ]
Guilmeau, E. [1 ]
Savary, E. [1 ]
Marinel, S. [1 ]
Cloots, R. [2 ]
Funahashi, R. [3 ]
Boschini, F. [2 ]
机构：
[1] ENSICAEN, UMR 6508, Lab CRISMAT, F-14050 Caen, France
[2] Univ Liege, Inst Chem, Lab APTIS LCIS GREENMAT, B-4000 Sart Tilman Par Liege, Belgium
[3] Natl Inst Adv Ind Sci & Technol, Ikeda, Osaka 5638577, Japan
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2015年 / 35卷 / 01期
关键词：
Thermoelectricity; Ge doped indium oxide; Slip casting; Microwave sintering; MASS-SPECTROMETRY; PERFORMANCE; COMPOSITE; ALUMINA; POWDERS; POWER;
D O I：
10.1016/j.jeurceramsoc.2014.08.012
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：
Ge doped In2O3 bulks were prepared by dry uniaxial compaction or slip casting shaping methods followed by a conventional or microwave sintering. Density of slip casted Ge doped In2O3 samples after conventional sintering reaches bulk density close to the theoretical one thanks to an optimized particles arrangement in the slip casted green bulks. Combined with a fast microwave sintering, slip casted bulks possess submicrometer grain size due to limited grain growth. A significant decrease of the electrical resistivity has been measured in slip casted samples sintered by conventional heat treatment. In bulk specimens sintered by microwave heating, a simultaneous increase of electrical resistivity and decrease of the thermal conductivity is observed. From room temperature to 1000 K in air, slip casted samples sintered by conventional or microwave sintering exhibit similar thermoelectric figure of merit (ZT) values. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：145 / 151
页数：7
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