Synthesis and characterization of self-assembled nanoenergetic Al-Fe2O3 thermite system
Synthesis and characterization of self-assembled nanoenergetic Al-Fe2O3 thermite system
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DOI：
10.1016/j.jpcs.2009.08.017
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发表时间：
2010-02-01
影响因子：
4
通讯作者：
Lee, Y. W.
中科院分区：
文献类型：
--
作者：
Cheng, J. L.;Hng, H. H.;Lee, Y. W.
纳米铝热石复合粉末具有优良的放热性能，具有传统微米级前驱体所不具备的性能。本文讨论了自组装Al-Fe_2O_3铝热剂体系的反应动力学，并与传统的物理混合实验结果进行了比较。表面活性剂的自组装使Al和Fe_2O_3之间的界面接触面积增加，从而加速了铝热剂反应过程，显著提高了反应动力学。研究发现，对于改善铝热剂体系的燃烧动力学，亲密混合比单个组分的尺寸更重要。(C)2009爱思唯尔有限公司。保留所有权利。
Nanothermite composites powders have superior exothermic characteristics and possess properties unobtainable by traditional micron-sized predecessors. In this paper, the reaction kinetics of a self-assembled Al-Fe2O3 thermite system are discussed and compared with conventional physical mixed references. Surfactant self-assembly allows an increase in interfacial contact area between Al and Fe2O3, which hastens the thermite reaction process to produce significant enhancement in the reaction kinetics. It was found that intimate mixing is a more important consideration for improving the combustion kinetics of thermite systems rather than the size of the individual components. (C) 2009 Elsevier Ltd. All rights reserved.