Open AccessCompare study on the explosion characteristics of nano-aluminum and micro-aluminum
Author(s) -
Yan Zhou
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.076202
Subject(s) - materials science , x ray photoelectron spectroscopy , combustion , scanning electron microscope , nano , ignition system , oxide , aluminium , aluminum oxide , diffraction , layer (electronics) , composite material , chemical engineering , energy dispersive x ray spectroscopy , metallurgy , optics , chemistry , physics , engineering , thermodynamics
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.