文献类型：期刊文献

英文题名：Thermoelectric properties of melt spun PbTe with multi- scaled nanostructures

作者：Ding, Guangchao[1];Si, Jianxiao[1];Wu, Haifei[2];Yang, Shidan[1];Zhao, Ji[1];Wang, Guwei[1]

机构：[1]Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2016

卷号：662

起止页码：368

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：SCI-EXPANDED(收录号：WOS:000368336200050)、、EI(收录号：20155201729594)、Scopus(收录号：2-s2.0-84951310476)、WOS

基金：This work was sponsored by the National Natural Science Foundation of China (Grant Nos. 51302248 and 51202149), Zhejiang Provincial Science and Technology Key Innovation Team (No. 2011R50012) and Zhejiang Provincial Key Laboratory (No. 2013E10022), Zhejiang Provincial Natural Science Foundation of China (Grant No. Y1110563).

语种：英文

外文关键词：Lead telluride; Melt spinning; Thermoelectric; Nanostructure

外文摘要：In this paper, the p-type PbTe samples with multi-scaled nanostructures are rapidly prepared by melt spinning (MS) combined with a rapid induction hot pressing (RHP) process. Melt spinning induced various meso-scaled grains with sizes between 0.5 similar to 2um. The nanograins (< 20 nm) could be formed inside the meso-scaled grains due to the ultrahigh cooling rate. The nanograins could be preserved in the samples sintered by RHP, which limits the grain growth with relatively short holding time. The Seebeck coefficients of the MS-RHP samples are increased due to the enhanced carrier filtering at grain boundaries. The multi-scaled nanostructures contribute to the lower thermal conductivity of the MS-RHP sample, which result in a maximum ZT value of 0.75 at 673 K. The results show that the MS-RHP technique is a facile and effective method to form nanostructured PbTe for industrial applications. (C) 2015 Elsevier B.V. All rights reserved.