Rapid synthesis and characterization of a nanolaminated Fe2AlB2 compound

Rapid synthesis and characterization of a nanolaminated Fe2AlB2 compound
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纳米层压 Fe2AlB2 化合物的快速合成和表征

DOI:
10.1016/j.jallcom.2018.06.352
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发表时间:
2018-10
影响因子:
6.2
通讯作者:
Zhou Yang
Zhou Yang
中科院分区:
材料科学2区
文献类型:
--
作者:
Liu Jie;Li Shibo;Yao Boxiang;Hu Shujun;Zhang Jing;Yu Wenbo;Zhou Yang

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三元过渡金属化合物Fe2AlB2因其层状结构、导电性和磁热效应而备受关注。然而,从Al、Fe和B元素粉末制备Fe2AlB2需要15 h到14天的长时间,在1000 °C下。本文报道了用无压烧结技术在1100-1200 °C范围内1 h合成Fe2AlB2。采用Fe/Al/B和FeB/Al两种混合物制备了Fe2AlB2,研究了烧结温度、保温时间、Al含量和添加锡对Fe2AlB2形成的影响。此外,还研究了FeB和Al混合物在1100 °C热压1 h制备的致密Fe2AlB2块体材料的力学性能。用X射线衍射仪和扫描电子显微镜对所制备材料的物相组成和微观结构进行了表征。
Fe2AlB2, a ternary transition metal compound, has attracted much attention due to its layered structure, electrical conductivity, and magnetocaloric effect. However, the preparation of Fe2AlB2from Al, Fe and B elemental powders requires a long reaction time of from 15 h to 14 days at 1000 °C. Here we report on the synthesis of Fe2AlB2in the temperature range 1100–1200 °C for 1 h through pressureless sintering technique. Two mixtures of Fe/Al/B and FeB/Al were used to prepare Fe2AlB2.The effects of sintering temperature, dwelling time, Al content, and Sn additive on the formation of Fe2AlB2have been studied. In addition, the mechanical properties of a dense Fe2AlB2bulk material prepared by hot pressing of the mixture of FeB and Al at 1100 °C for 1 h was investigated. X-ray diffraction and scanning electron microscopy were used to characterize the phase composition and microstructure of the prepared materials.
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