Synthesis of filled skutterudite compound La0.75Fe3CoSb12 by spark plasma sintering and effect of porosity on thermoelectric properties
Synthesis of filled skutterudite compound La0.75Fe3CoSb12 by spark plasma sintering and effect of porosity on thermoelectric properties
复制标题
放电等离子烧结法合成填充方钴矿化合物La0.75Fe3CoSb12及孔隙率对热电性能的影响
DOI：
10.1016/s0925-8388(03)00538-3
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发表时间：
2004-02
影响因子：
6.2
通讯作者：
Zhang L. T.
中科院分区：
文献类型：
--
作者：
Yang L.;Wu J. S.;Zhang L. T.
Filled skutterudite compounds La0.75Fe3CoSb12with different porosities were synthesized using spark plasma sintering (SPS) and the Archimedes method was used to measure the porosities of the specimens. Phase constitutions and compositions of the compounds were examined by XRD and EPMA, and fracture surfaces of the compounds were observed by SEM. The effect of porosity on the thermoelectric properties was studied based on the changes in the electrical resistivity, Seebeck coefficient and thermal conductivity as a function of porosity. Our results show that the Seebeck coefficient is independent of porosity and the increase of electrical resistivity is consistent with the reduction of thermal conductivity due to scattering of carriers and phonons by pores. In addition, the thermoelectric figure of merit ZT (where T is temperature and Z is a function of the Seebeck coefficient, electrical resistivity, and thermal conductivity) of specimens with high porosity is comparable to that of specimens with low porosity. This suggests that the ZT value of La0.75Fe3CoSb12compound does not depend significantly on the porosity.
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影响因子：
3.2
作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
通讯作者：
H. Anno;K. Hatada;H. Shimizu;K. Matsubara;Y. Notohara;T. Sakakibara;H. Tashiro;K. Motoya
影响因子：
9.6
作者：
Xinfeng Tang;Lidong Chen;Goto Takashi;Hirai Toshio;R. Yuan
通讯作者：
Xinfeng Tang;Lidong Chen;Goto Takashi;Hirai Toshio;R. Yuan
影响因子：
2.7
作者：
Lidong Chen;X. Tang;T. Goto;T. Hirai
通讯作者：
Lidong Chen;X. Tang;T. Goto;T. Hirai
影响因子：
3.2
作者：
G. Nolas;G. Slack;T. Caillat;G. Meisner
通讯作者：
G. Nolas;G. Slack;T. Caillat;G. Meisner
影响因子：
3.7
作者：
Morelli, DT;Meisner, GP;Uher, C
通讯作者：
Uher, C