Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1622276 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
Synthesis of non-doped and Y-doped SrTiO3 polycrystals was tried by the polymerized complex (PC) process and the subsequent hot pressing at 1473Â K and 1673Â K. The effects of hot pressing temperature on thermoelectric properties of these SrTiO3 sintered bulks were investigated. The PC process could provide the powder precursor with perovskite SrTiO3 structure even when Y was substituted for Sr site. And then, the SrTiO3 phase was mostly maintained after hot pressing. The Y doping slightly accelerated densification of compacts during the hot pressing. From these results, among the polycrystalline bulks fabricated in this study, the Sr0.9Y0.1TiO3 sample hot-pressed at 1673Â K showed the maximum dimensionless figure of merit, 0.146 at 870Â K. This figure of merit is lower than that of earlier results [H. Muta, K. Kurosaki, S. Yamanaka, J. Alloys Compd. 350 (2003) 292-295].
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Mikio Ito, Tomoaki Matsuda,