Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing
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
Abstract：Mechanical alloying and preparation of Fesubstituted CoSb3-based skutterudite Co4 xFexSb12 (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 Co4 xFexSb12 (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.
出版日期: 2007-06-05
引用本文:
. Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing[J]. Frontiers of Materials Science in China, 2007, 1(2): 177-180.
PENG Jiangying, YANG Junyou, SONG Xinli, CHEN Yuehua, BAO Siqian, ZHANG Tongjun. Synthesis of Fe-substituted CoSb3-based skutterudite Co4–xFexSb12 by mechanical alloying-hot pressing-annealing. Front. Mater. Sci., 2007, 1(2): 177-180.
