Effect of Shaping Method and Heat Treatment on Microstructure and Thermoelectric Properties of Titanium Dioxide

被引：0
|
作者：
Rubenis, Kristaps [1 ]
Pura, Agnese [1 ]
Teteris, Valdis [1 ]
Locs, Janis [1 ]
Ozolins, Jurijs [1 ]
机构：
[1] Riga Tech Univ, Dept Gen Chem Engn, LV-1048 Riga, Latvia
来源：
ENGINEERING MATERIALS & TRIBOLOGY XXII | 2014年 / 604卷
关键词：
shaping technique; titanium dioxide; thermoelectric properties;
D O I：
10.4028/www.scientific.net/KEM.604.240
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The TiO2 samples were obtained by two different shaping methods: cold isostatic pressing and cold extrusion, sintered in air at 1373 K, 1573 K, 1773 K and annealed under vacuum at 1373 K. Differences in density, microstructure and thermoelectric properties were observed between the samples depending on the shaping method used. With increase in sintering temperature the electrical conductivity of all samples increased while the Seebeck coefficient decreased. Great microstructural differences were observed between the surface and bulk of the samples made by each of the shaping techniques. It was found that microstructural differences between surface and bulk of the samples affect their thermoelectric properties.
引用
收藏
页码：240 / 244
页数：5
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