TY - GEN
T1 - Self-propagating high-temperature synthesis of calcium cobaltate thermoelectric powders
AU - Lin, Sidney
AU - Selig, Jiri
AU - Smith, Dan F.
AU - Lin, Hua Tay
AU - Wang, Hsin
PY - 2010
Y1 - 2010
N2 - Thermoelectric Ca1.24Co1.62O3.86 powders are synthesized by Self-propagating High-temperature Synthesis (SHS), a simple and economical process of synthesis oxides. Prepared powders were analyzed by XRD for phase purity, TG/DSC for thermal stability and SEM for particle size. Post treatment is also applied to improve the phase purity of powders produced by SHS. A short post treatment of 15 minutes in air can convert the SHS product into phase pure Ca1.24Co1.62O3.86. To study the reaction mechanism, TG-DSC analysis was performed on the reaction mixture to establish the reaction mechanism. Prepared powders have high Seebeck coefficient and figure of merit close to those prepared by spark plasma sintering. A finite element mathematical model is used to simulate the temperature profile inside the reactant pellet during the SHS.
AB - Thermoelectric Ca1.24Co1.62O3.86 powders are synthesized by Self-propagating High-temperature Synthesis (SHS), a simple and economical process of synthesis oxides. Prepared powders were analyzed by XRD for phase purity, TG/DSC for thermal stability and SEM for particle size. Post treatment is also applied to improve the phase purity of powders produced by SHS. A short post treatment of 15 minutes in air can convert the SHS product into phase pure Ca1.24Co1.62O3.86. To study the reaction mechanism, TG-DSC analysis was performed on the reaction mixture to establish the reaction mechanism. Prepared powders have high Seebeck coefficient and figure of merit close to those prepared by spark plasma sintering. A finite element mathematical model is used to simulate the temperature profile inside the reactant pellet during the SHS.
UR - http://www.scopus.com/inward/record.url?scp=79952382076&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952382076
SN - 9780470594742
T3 - Ceramic Engineering and Science Proceedings
SP - 15
EP - 24
BT - Advanced Materials for Sustainable Developments - A Collection of Papers Presented at the 34th International Conference on Advanced Ceramics and Composites, ICACC
T2 - Advanced Materials for Sustainable Developments - 34th International Conference on Advanced Ceramics and Composites, ICACC
Y2 - 24 January 2010 through 29 January 2010
ER -