3D ordered macroporous NiO/Al nanothermite film with significantly improved higher heat output, lower ignition temperature and less gas production

Chunpei Yu, Wenchao Zhang, Ruiqi Shen, Xing Xu, Jia Cheng, Jiahai Ye, Zhichun Qin, Yimin Chao

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Abstract

The performances of nanothermites largely rely on a meticulous design of nanoarchitectures and the close assembly of components. Three-dimensionally ordered macroporous (3DOM) NiO/Al nanothermite film has been successfully fabricated by integrating colloidal crystal template (CCT) method and controllable magnetron sputtering. The as-prepared NiO/Al film shows uniform structure and homogeneous dispersity, with greatly improved interfacial contact between fuel and oxidizer at the nanoscale. The total heat output of 3DOM NiO/Al nanothermite has reached 2461.27 J·g−1 at optimal deposition time of 20 min, which is significantly more than the values of other NiO/Al structural systems that have been reported before. Intrinsic reduced ignition temperature (onset temperature) and less gas production render the wide applications of 3DOM NiO/Al nanothermite. Moreover, this design strategy can also be readily generalized to realize diverse 3DOM structured nanothermites.
Original languageEnglish
Pages (from-to)304–310
JournalMaterials and Design
Volume110
Early online date2 Aug 2016
DOIs
Publication statusPublished - 15 Nov 2016

Keywords

  • nanothermite
  • NiO/Al
  • three-dimensionally ordered macroporous
  • magnetron sputtering
  • heat release

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