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Compare study on the explosion characteristics of nano-aluminum and micro-aluminum

Yan Zheng-Xin

Compare study on the explosion characteristics of nano-aluminum and micro-aluminum

Yan Zheng-Xin
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  • Abstract views:  3263
  • PDF Downloads:  674
  • Cited By: 0
Publishing process
  • Received Date:  23 October 2010
  • Accepted Date:  18 December 2010
  • Published Online:  15 July 2011

Compare study on the explosion characteristics of nano-aluminum and micro-aluminum

  • 1. Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi'an University of Science and Technology, Xi'an 710054, China;Faculty of Science, Xi'an University of Science and Technology, Xi'an 710054, China

Abstract: The explosion characteristic of propylene oxide/nano-, micro-alumium component were comparably investigated under the changed induced incident shock waves. The ignition delay times of two explosion systems were determined by the monochromater synchronous test technology. The structure, morphology, surface oxide layer of the products were analyized by scanning electron microscopy(SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results indicated that the products of nano-Al are the spongy-structure, need-structure and fiber-structure, the morphology of the products of microsize aluminum is mainly in spherical structure. The different phases of alumina(α,β,γ,ε,δ) in compress section , ignition section, combustion section, explosion section, propagation section, and compressed products section was revealed by XRD data. It shows that the reaction in nano-Al reaction system is more violent than that in micro-Al one and the decreasing temperature align the axial cause the different phases of alimina . XPS spectrum show that the oxide layers on the surface of nano-alumina is about 35nm, alumina is almost is 92%; while the oxide layer on the surface of micro-alumina is 30nm, alumina is merely 65%. The experimental results that indicated the existing two different ignition mechanisms and combustion mechanism will be useful to the addition of energy material.

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