采用熔融法结合放电等离子烧结技术制备了Eu填充式方钴矿化合物EuyCo4Sb12,研究了退火时间对Eu填充量及化合物热电性能的影响。采用X射线衍射和电子探针表征了化合物的相组成及成分。在300～850K,测试了化合物的电导率、热导率和Seebeck系数,结果表明:随着退火时间的延长,Eu在Co4Sb12中的填充量增加,电导率增加,晶格热导率降低,Seebeck系数降低;当退火时间为96h时,Eu填充量达到0.43,与名义组分相同经168h退火所得化合物的Eu填充量相近。 The Eu-filled skutterudite compound EuyCo4Sb12 was prepared by a melting method combined with spark plasma sintering. The effect of annealing time on the filling amount of Eu and the thermoelectric properties of the compound was investigated. The phase composition and composition of the compounds were characterized by X-ray diffraction and electron probe. At 300 ~ 850K, the conductivity, thermal conductivity and Seebeck coefficient of the compounds were tested. The results show that with the increase of annealing time, the loading of Eu in Co4Sb12 increases, the conductivity increases and the lattice thermal conductivity decreases. Seebeck When the annealing time is 96h, the Eu loading reaches 0.43, and the Eu loading of the compound with the same composition after 168h annealing is similar.