Super-rapid Preparation of Nanostructured NdxFe3CoSb12 Compounds and Their Improved Thermoelectric Performance
Super-rapid Preparation of Nanostructured NdxFe3CoSb12 Compounds and Their Improved Thermoelectric Performance
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纳米结构 NdxFe3CoSb12 化合物的超快速制备及其热电性能的改进
DOI：
10.1007/s11664-015-3997-9
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发表时间：
2016
影响因子：
2.1
通讯作者：
Zhou Xiaoyuan
中科院分区：
文献类型：
--
作者：
Guo Lijie;Zhang Yumeng;Zheng Yong;Yao Wei;Wang Guiwen;Wang Guoyu;Zhou Xiaoyuan
本文报道了用自制的感应熔炼装置在手套箱中超快速制备P型方钴矿化合物NdxFe3CoSb 12（x = 0.8，0.85，0.9，0.95，1.0），然后进行放电等离子烧结。与固相反应制备的样品相比，加工时间从9天大幅缩短至不到3 h，也明显快于传统的熔融纺丝方法（40 h）。此外，大块样品的热导率显着降低，由于Nd填料和晶界密度增加。热电性能的提高和加工时间的大幅缩短对于方钴矿基热电材料的商业化生产具有重要意义。
We report super-rapid preparation of p-type NdxFe3CoSb12 (x = 0.8, 0.85, 0.9, 0.95, 1.0) skutterudite compounds via a homemade induction melting assembly inside a glovebox followed by spark plasma sintering. Compared with samples prepared by solid-state reaction, the processing time is dramatically reduced from 9 days to less than 3 h, which is also significantly faster than the traditional melt-spinning method (40 h). Furthermore, the thermal conductivity of the bulk samples was remarkably reduced due to the Nd filler and the increased grain-boundary density. The enhanced thermoelectric performance coupled with the drastically reduced processing time is of considerable significance for commercial-scale production of skutterudite-based thermoelectric materials.