Paper Title:
Microstructure and Sintering Behavior of ZnO Thermoelectric Materials Prepared by the Pulse-Current-Sintering Method
  Abstract

Thermoelectric elements using environment-friendly materials with high thermoelectric conversion efficiency and of these thermoelectric elements can be increased by using a structure combining n-type and p-type semiconductors. From the above point of view, attention was directed at ZnO as a candidate n-type semiconductor material and investigations were made. As the result, a dimensionless figure of merit ZT close to 0.28 (1073K) was obtained for specimens produced by the PCS (Pulse Current Sintering) method with addition of specified quantities of TiO2, CoO, and Al2O3 to ZnO. It was found that the interstitial TiO2 in the ZnO restrains the grain growth and CoO acts onto the bond between grains.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
1541-1544
DOI
10.4028/www.scientific.net/MSF.534-536.1541
Citation
N. Shikatani, T. Misawa, Y. Ohtsu, H. Fujita, Y. Kawakami, T. Enjoji, "Microstructure and Sintering Behavior of ZnO Thermoelectric Materials Prepared by the Pulse-Current-Sintering Method", Materials Science Forum, Vols. 534-536, pp. 1541-1544, 2007
Online since
January 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: J.W. Paek, Beom Seob Kim, Deug Joong Kim
Abstract:Ceramic foams containing MoSi2 were prepared by a self-blowing process of poly-silsesquioxane with MoSi2 as filler. Ceramic foams prepared by...
129
Authors: Roberta M.C. Sasahara, H.N. Yoshimura, C. Fredericci, Alberto Calasans, Paulo Francisco Cesar, André Luiz Molisani
Abstract:The aim of this work was to establish a route to produce pre-sintered blocks of Y-TZP (yttria stabilized tetragonal zirconia polycrystal)...
712
Authors: Szilvia Eosoly, Stefan Lohfeld, Dermot Brabazon
Abstract:Selective laser sintering (SLS) has the potential to fabricate bioresorbable polymer / ceramic composite scaffolds with pre-designed external...
659
Authors: Qiang Shen, Chang Lian Chen, Fei Chen, Qi Wen Liu, Lian Meng Zhang
Abstract:Porous calcia stabilized zirconia ceramics (CSZC) with closed pores were presurelessly sintered by adding different contents of zirconia...
435
Authors: Trevor Sawatzky, Dong Yi Seo, H. Saari, D. Laurin, Dae Jin Kim, Young Won Kim
Abstract:The microstructure and creep properties of two powder metallurgy (PM) ‘beta gamma’ titanium aluminide alloys are presented. Alloy powders...
500