Preparation and characterization of Al/B/Fe2O3 nanothermites

A sol-gel synthetic approach combined with an ultrasonic method was utilized to prepare Al/B/Fe 2 O 3 nanothermites. The structure and properties of the prepared nanothermites were characterized by thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy, X-ray dif...

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Bibliographic Details
Published in:Science China. Chemistry 2014-06, Vol.57 (6), p.797-802
Main Authors: Shen, LianHua, Li, GuoPing, Luo, YunJun, Gao, Kun, Ge, Zhen
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Iron oxides
Sol-gel processes
Thermogravimetric analysis
Ultrasonic methods
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Summary:A sol-gel synthetic approach combined with an ultrasonic method was utilized to prepare Al/B/Fe 2 O 3 nanothermites. The structure and properties of the prepared nanothermites were characterized by thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy, X-ray diffraction, and an impact sensitivity test. The results verified that the nano-aluminum and the micro-boron were uniformly dispersed in the pores of the iron oxide gel. The heat of the prepared Al/B/Fe 2 O 3 nanothermites was 1.3 times that of the simple physically mixed sample. In addition, the heat of the combustion test showed that these materials were indeed energetic. Small-scale safe experiments also showed that the prepared materials through sol-gel were relatively insensitive to standard impact.
ISSN:1674-7291
1869-1870
DOI:10.1007/s11426-013-5050-2