文献类型：期刊文章

作　　者：周书才[1,2] 白晨光[2]

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]重庆科技学院冶金与材料工程学院,重庆401331

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Project (2009BB4228) supported by the Natural Science Foundation Project of Chongqing Science and Technology Commission,China;Project (CK2010Z09) supported by the Research Foundation of Chongqing University of Science and Technology,China

年　　份：2011

卷　　号：21

期　　号：8

起止页码：1785-1789

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000295935400017)、SCI-EXPANDED(收录号：WOS:000295935400017)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：In order to reduce the oxidation and volatilization caused by Mg element in the traditional methods for synthesizing Mg2Si compounds,Mg2Si thermoelectric materials were prepared by solid state reaction and microwave radiation techniques.Structure and phase composition of the materials were investigated by X-ray diffraction.The electrical conductivity,Seebeck coefficient and thermal conductivity were measured as a function of temperature from 300 to 700 K.It is found that high purity Mg2Si powders can be obtained with excessive content of 8% Mg from the stoichiometric Mg2Si at 853 K and 2.5 kW for 30 min.A maximum dimensionless figure of merit,ZT,of about 0.13 was obtained for Mg2Si at 600 K.

关 键 词：MG2SI thermoelectric materials  solid state reaction  microwave synthesis  

分 类 号：O614.22]