Effect of processing parameters on formation and thermoelectric properties of La0.4FeCo3Sb12 skutterudite by MA-HP method

被引：12

作者：

Bao, Siqian ^{[1
,2
]}

Yang, Junyou ^{[1
]}

Zhu, Wen ^{[1
]}

Fan, Xi'an ^{[1
]}

Duan, Xingkai ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Wuhan Univ Sci & Technol, Minist Educ, Key Lab Ferrous Met & Resources Utilizat, Wuhan 430081, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 476卷 / 1-2期

关键词：

Thermoelectric material; Mechanical alloying; X-ray diffraction; COSB3; TEMPERATURE;

D O I：

10.1016/j.jallcom.2008.09.120

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Starting from element La, Fe, Co and Sb powders, La0.4FeCo3Sb12 filled skutterudite was prepared by mechanical alloying (MA) and subsequent hot pressing (HP), and effect of processing parameters on formation and thermoelectric properties of La0.4FeCo3Sb12 filled skutterudite was studied in this paper. Single skutterudite phase can be obtained when the hot pressing time is more than 2 In and the hot pressing temperature is higher than 650 degrees C. The Seebeck coefficient increases with the hot pressing time; and the electrical resistivity firstly increases with the hot pressing time and decreases on further prolonging the hot pressing time from 2 h to 3 h. On the other hand, the Seebeck coefficient and the electrical resistivity increase with the hot pressing temperature and the milling time. As a result, a maximum ZT value of 0.39 is achieved for the La0.4FeCo3Sb12 sample hot pressed at 700 degrees C for 3 h. (C) 2008 Published by Elsevier B.V.

引用

页码：802 / 806

页数：5

共 18 条

[1] Preparation and thermoelectric properties of LaxFeCo3Sb12 skutterudites by mechanical alloying and hot pressing [J].