研究了以Co,Sb,Fe及稀土Ce,La为起始原料,采用固相反应-放电等离子烧结(SPS)技术合成二元稀土填充式Skutterudite化合物(Ce,La)yFexCo4-xSb12(x=1.0,y=0~0.3),并对化合物的热电性能进行了研究.实验结果表明: 在y=0~0.3组成范围内,采用固相反应-SPS法在900~1000 K温度范围内合成了(Ce,La)yFexCo4-xSb12化合物,并伴有极少量的Sb相.(Ce,La)yFexCo4-xSb12化合物呈现p型传导,化合物的晶格常数和Seebeck系数随Ce,La复合填充分数y的增加而增加,电导率和热导率由于Ce,La的复合填充大幅度降低,并且随着填充分数的增加进一步降低.当Ce,La复合填充分数为0.3时热导率达到最小值.在773 K,富Co组成Ce0.1La0.2FeCo3Sb12化合物的最大无量纲热电性能指数ZTmax达0.46.
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