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- Title
Influence of multi-sintering on the thermoelectric properties of Bi2Sr2Co2Oy ceramics.
- Authors
Zhang, Y.; Fan, M. M.; Ruan, C. C.; Zhang, Y. W.; Li, X.-J.; Song, H. Z.
- Abstract
Bi 2 Sr 2 Co 2 O y ceramic samples have a structure similar to phonon glass electronic crystals, and their thermoelectric properties can be effectively adjusted through repeated grinding and sintering. The results show that multi-sintering can make their grain refined and increase their grain boundary, which will effectively increase density and phonon scattering. Finally, multi-sintering can reduce the resistivity and thermal conductivity, thus obviously improve thermoelectric figure of merit (Z T) of Bi 2 Sr 2 Co 2 O y . The optimum Z T value of 0.26 is achieved at 923 K by the third sintered sample.
- Subjects
THERMOELECTRIC materials; PHONON scattering; ELECTRON glasses; CERAMICS; CRYSTAL grain boundaries; THERMAL conductivity; POWDER metallurgy; LOW Temperature Cofired Ceramic technology
- Publication
Modern Physics Letters B, 2020, Vol 34, Issue 2, pN.PAG
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984920500190