Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1462629 | Ceramics International | 2012 | 6 Pages |
Abstract
CuAl1âxFexO2 (x = 0, 0.1, and 0.2) thermoelectric ceramics produced by a reaction-sintering process were investigated. Pure CuAlO2 and CuAl0.9Fe0.1O2 were obtained. Minor CuAl2O4 phase formed in CuAl0.8Fe0.2O2. Addition of 10 mol% Fe lowered the sintering temperature obviously and enhanced the grain growth. At x = 0.1, electrical conductivity = 3.143 Ωâ1 cmâ1, Seebeck coefficient = 418 μV Kâ1, and power factor = 5.49 Ã 10â5 W mâ1 Kâ2 at 600 °C were obtained. The reaction-sintering process is simple and effective in preparing CuAlO2 and CuAl0.9Fe0.1O2 thermoelectric ceramics for applications at high temperatures.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yi-Cheng Liou, Li-Shin Chang, Yang-Ming Lu, Hong-Chou Tsai, Uang-Ru Lee,