Preparation and characterization of Fe substituted CoSb3 skutterudite by mechanical alloying and annealing
Preparation and characterization of Fe substituted CoSb3 skutterudite by mechanical alloying and annealing
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DOI：
10.1016/j.jallcom.2004.03.104
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发表时间：
2004-11
影响因子：
6.2
通讯作者：
Jiangying Peng;Junyou Yang;Tong-jun Zhang;Xinli Song;Yuehua Chen
中科院分区：
文献类型：
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作者：
Jiangying Peng;Junyou Yang;Tong-jun Zhang;Xinli Song;Yuehua Chen
组成为 Co4−xFexSb12（x=0.2、0.5、1.0、1.5、2.0）的元素粉末混合物通过高能球磨和随后的等温退火进行机械合金化。当x≤0.5时，得到单相方钴矿结构，当x>0.5时，检测到Sb和FeSb2型杂质。方钴矿结构的晶格参数随着Fe浓度的增加而线性增加，并且发现Fe在未填充的方钴矿结构Co4−xFexSb12中的最大溶解度接近x=0.68。
Elemental powder mixtures of the composition Co4−xFexSb12with x=0.2, 0.5, 1.0, 1.5, 2.0 were mechanically alloyed by means of high energy ball milling and subsequent isothermal annealing. The single phase skutterudite structure was obtained when x≤0.5, while Sb and FeSb2-type impurities were detected when x>0.5. The lattice parameters of the skutterudite structure increased linearly with Fe concentration, and the maximum solubility of Fe in the unfilled skutterudite structure Co4−xFexSb12was found to be nearly x=0.68.