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Title: Heating rate dependent ignition of Al/Pt nanolaminates through pulsed laser irradiation

Direct laser irradiation of sputter deposited Al/Pt nanolaminate multilayers results in rapid local heating and exothermic mixing of reactant layers. Milli- and microsecond pulsed laser irradiation under certain test conditions leads to single-point ignition of rapid, self-propagating, formation reactions. Multilayers having bilayer thicknesses of 328 nm, 164 nm, and 65 nm are characterized by their ignition onset times and temperatures. Smaller bilayer thickness multilayers require less laser intensity for ignition compared with larger bilayer designs (when utilizing a particular pulse duration). The relationship between laser intensity and ignition onset time is used to calibrate an activation energy for ignition within a finite element reactive heat transport model. The local heating rate is varied from 10 4 K/s to 10 6 K/s by selecting a laser intensity. Kissinger analysis was performed on the heating rate-dependent ignition temperatures measured with high speed pyrometry to experimentally determine an activation energy in the foils of (6.2 ± 1.6 × 10 4 J/mole atoms). Furthermore, this value is then compared to an activation energy produced from model fits to an ignition onset time of 7.2 × 10 4 J/mole atoms.
Authors:
 [1] ;  [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2018-6578J
Journal ID: ISSN 0021-8979; 664565
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 123; Journal Issue: 23; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1457521
Alternate Identifier(s):
OSTI ID: 1456261

Abere, Michael J., Yarrington, Cole D., and Adams, David P.. Heating rate dependent ignition of Al/Pt nanolaminates through pulsed laser irradiation. United States: N. p., Web. doi:10.1063/1.5026507.
Abere, Michael J., Yarrington, Cole D., & Adams, David P.. Heating rate dependent ignition of Al/Pt nanolaminates through pulsed laser irradiation. United States. doi:10.1063/1.5026507.
Abere, Michael J., Yarrington, Cole D., and Adams, David P.. 2018. "Heating rate dependent ignition of Al/Pt nanolaminates through pulsed laser irradiation". United States. doi:10.1063/1.5026507.
@article{osti_1457521,
title = {Heating rate dependent ignition of Al/Pt nanolaminates through pulsed laser irradiation},
author = {Abere, Michael J. and Yarrington, Cole D. and Adams, David P.},
abstractNote = {Direct laser irradiation of sputter deposited Al/Pt nanolaminate multilayers results in rapid local heating and exothermic mixing of reactant layers. Milli- and microsecond pulsed laser irradiation under certain test conditions leads to single-point ignition of rapid, self-propagating, formation reactions. Multilayers having bilayer thicknesses of 328 nm, 164 nm, and 65 nm are characterized by their ignition onset times and temperatures. Smaller bilayer thickness multilayers require less laser intensity for ignition compared with larger bilayer designs (when utilizing a particular pulse duration). The relationship between laser intensity and ignition onset time is used to calibrate an activation energy for ignition within a finite element reactive heat transport model. The local heating rate is varied from 104 K/s to 106 K/s by selecting a laser intensity. Kissinger analysis was performed on the heating rate-dependent ignition temperatures measured with high speed pyrometry to experimentally determine an activation energy in the foils of (6.2 ± 1.6 × 104 J/mole atoms). Furthermore, this value is then compared to an activation energy produced from model fits to an ignition onset time of 7.2 × 104 J/mole atoms.},
doi = {10.1063/1.5026507},
journal = {Journal of Applied Physics},
number = 23,
volume = 123,
place = {United States},
year = {2018},
month = {6}
}

Works referenced in this record:

Reactive multilayers fabricated by vapor deposition: A critical review
journal, February 2015

Joining bulk metallic glass using reactive multilayer foils
journal, June 2003

Effect of intermixing on self-propagating exothermic reactions in Al/Ni nanolaminate foils
journal, February 2000
  • Gavens, A. J.; Van Heerden, D.; Mann, A. B.
  • Journal of Applied Physics, Vol. 87, Issue 3, p. 1255-1263
  • DOI: 10.1063/1.372005