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Title: Improving aluminum particle reactivity by annealing and quenching treatments: Synchrotron X-ray diffraction analysis of strain

Abstract

In bulk material processing, annealing and quenching metals such as aluminum (Al) can improve mechanical properties. On a single particle level, affecting mechanical properties may also affect Al particle reactivity. Our study examines the effect of annealing and quenching on the strain of Al particles and the corresponding reactivity of aluminum and copper oxide (CuO) composites. Micron-sized Al particles were annealed and quenched according to treatments designed to affect Al mechanical properties. Furthermore, synchrotron X-ray diffraction (XRD) analysis of the particles reveals that thermal treatment increased the dilatational strain of the aluminum-core, alumina-shell particles. Flame propagation experiments also show thermal treatments effect reactivity when combined with CuO. An effective annealing and quenching treatment for increasing aluminum reactivity was identified. Our results show that altering the mechanical properties of Al particles affects their reactivity.

Authors:
 [1];  [1];  [2]
  1. Texas Tech Univ., Lubbock, TX (United States). Mechanical Engineering
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1379036
Alternate Identifier(s):
OSTI ID: 1358704
Grant/Contract Number:  
AC02-05CH11231; W911NF-14-1-0250
Resource Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 103; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; aluminum; powder; dilatational strain; mechanical properties; reactivity; annealing; quenching; synchrotron XRD; energetic materials; combustion; thermites

Citation Formats

McCollum, Jena, Pantoya, Michelle L., and Tamura, Nobumichi. Improving aluminum particle reactivity by annealing and quenching treatments: Synchrotron X-ray diffraction analysis of strain. United States: N. p., 2015. Web. doi:10.1016/j.actamat.2015.10.025.
McCollum, Jena, Pantoya, Michelle L., & Tamura, Nobumichi. Improving aluminum particle reactivity by annealing and quenching treatments: Synchrotron X-ray diffraction analysis of strain. United States. doi:10.1016/j.actamat.2015.10.025.
McCollum, Jena, Pantoya, Michelle L., and Tamura, Nobumichi. Fri . "Improving aluminum particle reactivity by annealing and quenching treatments: Synchrotron X-ray diffraction analysis of strain". United States. doi:10.1016/j.actamat.2015.10.025. https://www.osti.gov/servlets/purl/1379036.
@article{osti_1379036,
title = {Improving aluminum particle reactivity by annealing and quenching treatments: Synchrotron X-ray diffraction analysis of strain},
author = {McCollum, Jena and Pantoya, Michelle L. and Tamura, Nobumichi},
abstractNote = {In bulk material processing, annealing and quenching metals such as aluminum (Al) can improve mechanical properties. On a single particle level, affecting mechanical properties may also affect Al particle reactivity. Our study examines the effect of annealing and quenching on the strain of Al particles and the corresponding reactivity of aluminum and copper oxide (CuO) composites. Micron-sized Al particles were annealed and quenched according to treatments designed to affect Al mechanical properties. Furthermore, synchrotron X-ray diffraction (XRD) analysis of the particles reveals that thermal treatment increased the dilatational strain of the aluminum-core, alumina-shell particles. Flame propagation experiments also show thermal treatments effect reactivity when combined with CuO. An effective annealing and quenching treatment for increasing aluminum reactivity was identified. Our results show that altering the mechanical properties of Al particles affects their reactivity.},
doi = {10.1016/j.actamat.2015.10.025},
journal = {Acta Materialia},
number = C,
volume = 103,
place = {United States},
year = {2015},
month = {11}
}

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