Journal article
Irradiation-Enhanced Reactivity of Multi layer Al/Ni Nanomaterials
ACS applied materials & interfaces, v 7(21), pp 11272-11279
03 Jun 2015
PMID: 25915560
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have investigated the effect of accelerated ion beam irradiation on the structure and reactivity of multilayer sputter deposited Al/Ni nanomaterials. Carbon and aluminum ion beams with different charge states and intensities were used to irradiate the multilayer materials. The conditions for the irradiation-assisted self-ignition of the reactive materials and corresponding ignition thresholds for the beam intensities were determined. We discovered that relatively short (40 min or less) ion irradiations enhance the reactivity of the Al/Ni nanomaterials, that is, significantly decrease the thermal ignition temperatures (T-ig) and ignition delay times (t(ig)). We also show that irradiation leads to atomic mixing at the Al/Ni interfaces with the formation of an amorphous interlayer, in addition to the nucleation of small (2-3 nm) Al3Ni crystals within the amorphous regions. The amorphous interlayer is thought to enhance the reactivity of the multilayer energetic nanomaterial by increasing the heat of the reaction and by speeding the intermixing of the Ni and the Al. The small Al3Ni crystals may also enhance reactivity by facilitating the growth of this Al-Ni intermetallic phase. In contrast, longer irradiations decrease reactivity with higher ignition temperatures and longer ignition delay times. Such changes are also associated with growth of the Al3Ni intermetallic and decreases in the heat of reaction. Drawing on this data set, we suggest that ion irradiation can be used to fine-tune the structure and reactivity of energetic nanomaterials.
Metrics
Details
- Title
- Irradiation-Enhanced Reactivity of Multi layer Al/Ni Nanomaterials
- Creators
- Khachatur V. Manukyan - University of Notre DameWanpeng Tan - University of Notre DameRichard J. deBoer - University of Notre DameEdward J. Stech - University of Notre DameAni Aprahamian - University of Notre DameMichael Wiescher - University of Notre DameSergei Rouvimov - University of Notre DameKyle R. Overdeep - Johns Hopkins UniversityChristopher E. Shuck - University of Notre DameTimothy P. Weihs - Johns Hopkins UniversityAlexander S. Mukasyan - University of Notre Dame
- Publication Details
- ACS applied materials & interfaces, v 7(21), pp 11272-11279
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Grant note
- DMR-1308966 / National Science Foundation (NSF) DE-NA0002377 / National Nuclear Security Administration 1430152 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) 1308966 / Division Of Materials Research; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) HDTRAA1-11-1-0063; HDTRA1-10-1-0119 / DTRA; United States Department of Defense; Defense Threat Reduction Agency PHY-1419765 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000355891700028
- Scopus ID
- 2-s2.0-84930641906
- Other Identifier
- 991019296564404721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology