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Preparation of micro-nano hollow multiphase ceramic microspheres containing MnFe2O4 absorbent by self-reactive quenching method

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Abstract

Fe–Fe2O3–MnO2–sucrose–epoxy resin and O2 as reaction system and feed gas, separately, were used to prepare micro-nano hollow multiphase ceramic microspheres containing MnFe2O4 absorbent by self-reactive quenching method which is integrated with flame jet, self-propagating high-temperature synthesis (SHS), and rapidly solidification. The morphologies and phase compositions of hollow microspheres were studied by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and energy dispersive spectroscopy. The results show that the quenching products are regular spherical substantially with hollow structure, particle size is between few hundreds nanometers and 5 μm. Phase compositions are diphase of Fe3O4, Mn3O4, and MnFe2O4, and the spinel soft magnetic ferrite MnFe2O4 with microwave magnetic properties is in majority. Collisions with each other, burst as well as “refinement” of agglomerate powders in flame field may be the main reasons for the formation of micro-nano hollow multiphase ceramic microspheres containing MnFe2O4 absorbent.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 51172282).

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Authors and Affiliations

  1. Advanced Materials Institute, Mechanical Engineering College, Shijiazhuang, 050003, China

    Hong-Fei Lou, Jian-Jiang Wang, Zhi-Ning Zhao, Xu-Dong Cai & Yong-Shen Hou

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  1. Hong-Fei Lou
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  2. Jian-Jiang Wang
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  3. Zhi-Ning Zhao
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  5. Yong-Shen Hou
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Correspondence to Hong-Fei Lou.

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Lou, HF., Wang, JJ., Zhao, ZN. et al. Preparation of micro-nano hollow multiphase ceramic microspheres containing MnFe2O4 absorbent by self-reactive quenching method. Rare Met. 32, 592–598 (2013). https://doi.org/10.1007/s12598-013-0189-8

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  • DOI: https://doi.org/10.1007/s12598-013-0189-8

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