J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (12): 1165-1168.

• Regular Papers • Previous Articles     Next Articles

Preparation of In2O3-Sr2RuErO6 Composite Ceramics by the Spark Plasma Sintering and Their Thermoelectric Performance

Bo Cheng1), Yuanhua Lin1), Jinle Lan1), Yong Liu2), Cewen Nan1)   

  1. 1) State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
    2) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2011-03-21 Revised:2011-07-17 Online:2011-12-28 Published:2011-12-24
  • Contact: Y.H. Lin
  • Supported by:

    the National Basic Research Program of China under Grant No. 2007CB607504, and also supported by the National High Technology Research and Development Program of China, under grant No. 2009AA03Z216

Abstract: In1.94Zn0.03Ge0.03 O3 and Sr2RuErO6 composite ceramics have been prepared by the spark plasma sintering (SPS) technique. Microstructure studies show that the Sr2RuErO6 phases are randomly dispersed in the In1.94Zn0.03Ge0.03 O3 matrix. The results show that the Seebeck coe±cient increases with increasing the amount of Sr2RuErO6, while the thermal conductivity of the composite samples is lower than that of the In1.94Zn0.03Ge0.03 O3 ceramic. The thermal conductivity of the 7 vol.% Sr2RuErO6 sample can decrease to 2.15 W·m-1·K-1 at 973 K, and the evaluated maximum ZT value is 0.23 for 3 vol.% Sr2RuErO6 samples at 973 K, which makes them promising materials for the thermoelectric devices.

Key words: Indium oxide, Double perovskite, Thermoelectric performance, Composite