Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing

doi:10.1007/s11706-007-0032-y

Front. Mater. Sci.

2007, Vol. 1

Issue (2) : 177-180 https://doi.org/10.1007/s11706-007-0032-y

Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing

PENG Jiangying, YANG Junyou, SONG Xinli, CHEN Yuehua, BAO Siqian, ZHANG Tongjun

State Key Laboratory for Plastic Forming Simulation and Dies Technology, Institute of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

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Abstract Mechanical alloying and preparation of Fesubstituted CoSb₃-based skutterudite Co_{4 x}Fe_xSb₁₂ (x"d1) were studied. All the compositions showed similar kinetics in mechanical alloying, where the skutterudite phase was kinetically more favorable than CoSb₂ phase initially. Then the latter became the strongest phase when milling time was increased. A single phase skutterudite structure could not be obtained via mechanical alloying. Hot pressing on powders milled for 10 hours yielded mostly skutterudite phase as well as minor residual Sb impurity, and single phase skutterudite compounds were finally obtained for Co_{4 x}Fe_xSb₁₂ (x"d0.65) after annealing at 650?C for 48 hours. The maximal solubility for Fe substitution seemed to be reached at x = 0.65.

Issue Date: 05 June 2007

Cite this article:

YANG Junyou,PENG Jiangying,SONG Xinli, et al. Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing[J]. Front. Mater. Sci., 2007, 1(2): 177-180.

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https://academic.hep.com.cn/foms/EN/10.1007/s11706-007-0032-y
https://academic.hep.com.cn/foms/EN/Y2007/V1/I2/177

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