Journal article
Reactive Ni/AI Nanocomposites: Structural Characteristics and Activation Energy
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, v 121(6), pp 1175-1181
16 Feb 2017
PMID: 28099018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Stochastically structured Ni/Al reactive nanocomposites (RNCs) were prepared using short-term high-energy ball milling. Several milling times were utilized to prepare RNCs with differing internal nanostructures. These internal structures were quantitatively and statistically analyzed by use of serial focused ion beam sectioning coupled with 3D reconstruction techniques. The reaction kinetics were analyzed using the electrothermal explosion technique for each milling condition. It is shown that the effective activation energy (E-ef) ranges from 79 to 137 kJ/mol and is directly related to the surface area contact between the reactants. Essentially, the reaction kinetics can be accurately controlled through mechanical processing techniques. Finally, the nature of the reaction is considered; the mechanistic effect of the reactive and three diffusive activation energies on the effective activation energy is examined.
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Details
- Title
- Reactive Ni/AI Nanocomposites: Structural Characteristics and Activation Energy
- Creators
- Christopher E. Shuck - University of Notre DameAlexander S. Mukasyan - University of Notre Dame
- Publication Details
- The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, v 121(6), pp 1175-1181
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 7
- Grant note
- K2-2016-065 / Ministry of Education and Science of the Russian Federation; Ministry of Education and Science, Russian Federation DE-NA0002377 / Department of Energy, National Nuclear Security Administration as part of the Predictive Science Academic Alliance Program II U.S. Department of State through the Fulbright program
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000394482500002
- Scopus ID
- 2-s2.0-85027054734
- Other Identifier
- 991019296801304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Physics, Atomic, Molecular & Chemical