Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles

Abstract Surface-mediated Al particles are synthesized by incorporating the stable fluoride reaction of Al-F on a pure Al surface in place of natural oxides. Al particles with fluoro-polymer directly adsorbed on the surface show a considerable capability to overcome limitations caused by the surface...

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Autores principales:	Dong Won Kim, Kyung Tae Kim, Tae Sik Min, Kyung Ju Kim, Soo Hyung Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ab2576ed4b2442e7b3c37fdbcf8063fc
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spelling	oai:doaj.org-article:ab2576ed4b2442e7b3c37fdbcf8063fc2021-12-02T15:06:17ZImproved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles10.1038/s41598-017-04758-72045-2322https://doaj.org/article/ab2576ed4b2442e7b3c37fdbcf8063fc2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04758-7https://doaj.org/toc/2045-2322Abstract Surface-mediated Al particles are synthesized by incorporating the stable fluoride reaction of Al-F on a pure Al surface in place of natural oxides. Al particles with fluoro-polymer directly adsorbed on the surface show a considerable capability to overcome limitations caused by the surface oxide. Here, we report that Al fluoride when spontaneously formed at the poly(vinylidene fluoride)/Al interface serves as an oxidation-protecting layer while also providing an efficient combustion path along which the internal Al rapidly reacts with external oxygen atoms. Both thermal oxidation and explosion tests of the poly(vinylidene fluoride)/Al particles show superior exothermic enthalpy energy and simultaneously rapid oxidation reactivity compared to those of Al2O3 passivated Al particles. It is clearly elucidated that the enhanced energetic properties of Al particles mediated by poly(vinylidene fluoride) originate from the extraordinary pyrolytic process of Al fluoride occurring at a low temperature compared to Al2O3 passivated Al. Hence, these results clarify that the surface mediation of Al particles can be significantly considered as advanced technology for many energetic applications.Dong Won KimKyung Tae KimTae Sik MinKyung Ju KimSoo Hyung KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dong Won Kim Kyung Tae Kim Tae Sik Min Kyung Ju Kim Soo Hyung Kim Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
description	Abstract Surface-mediated Al particles are synthesized by incorporating the stable fluoride reaction of Al-F on a pure Al surface in place of natural oxides. Al particles with fluoro-polymer directly adsorbed on the surface show a considerable capability to overcome limitations caused by the surface oxide. Here, we report that Al fluoride when spontaneously formed at the poly(vinylidene fluoride)/Al interface serves as an oxidation-protecting layer while also providing an efficient combustion path along which the internal Al rapidly reacts with external oxygen atoms. Both thermal oxidation and explosion tests of the poly(vinylidene fluoride)/Al particles show superior exothermic enthalpy energy and simultaneously rapid oxidation reactivity compared to those of Al2O3 passivated Al particles. It is clearly elucidated that the enhanced energetic properties of Al particles mediated by poly(vinylidene fluoride) originate from the extraordinary pyrolytic process of Al fluoride occurring at a low temperature compared to Al2O3 passivated Al. Hence, these results clarify that the surface mediation of Al particles can be significantly considered as advanced technology for many energetic applications.
format	article
author	Dong Won Kim Kyung Tae Kim Tae Sik Min Kyung Ju Kim Soo Hyung Kim
author_facet	Dong Won Kim Kyung Tae Kim Tae Sik Min Kyung Ju Kim Soo Hyung Kim
author_sort	Dong Won Kim
title	Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
title_short	Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
title_full	Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
title_fullStr	Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
title_full_unstemmed	Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles
title_sort	improved energetic-behaviors of spontaneously surface-mediated al particles
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ab2576ed4b2442e7b3c37fdbcf8063fc
work_keys_str_mv	AT dongwonkim improvedenergeticbehaviorsofspontaneouslysurfacemediatedalparticles AT kyungtaekim improvedenergeticbehaviorsofspontaneouslysurfacemediatedalparticles AT taesikmin improvedenergeticbehaviorsofspontaneouslysurfacemediatedalparticles AT kyungjukim improvedenergeticbehaviorsofspontaneouslysurfacemediatedalparticles AT soohyungkim improvedenergeticbehaviorsofspontaneouslysurfacemediatedalparticles
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Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles

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