Combustion velocities and propagation mechanisms of metastable interstitial composites

B. S. Bockmon; M. L. Pantoya; S. F. Son; B. W. Asay; J. T. Mang

doi:10.1063/1.2058175

Combustion velocities and propagation mechanisms of metastable interstitial composites

B. S. Bockmon, M. L. Pantoya, S. F. Son, B. W. Asay, J. T. Mang

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

277 Scopus citations

Abstract

Combustion velocities were experimentally determined for nanocomposite thermite powders composed of aluminum (Al) fuel and molybdenum trioxide (MoO3) oxidizer under well-confined conditions. Pressures were also measured to provide detailed information about the reaction mechanism. Samples of three different fuel particle sizes (44, 80, and 121 nm) were analyzed to determine the influence of particle size on combustion velocity. Bulk powder density was varied from approximately 5% to 10% of the theoretical maximum density (TMD). The combustion velocities ranged from approximately 600 to 1000 ms. Results indicate that combustion velocities increase with decreasing particle size. Pressure measurements indicate that strong convective mechanisms are integral in flame propagation.

Original language	English
Article number	064903
Journal	Journal of Applied Physics
Volume	98
Issue number	6
DOIs	https://doi.org/10.1063/1.2058175
State	Published - Sep 15 2005

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title = "Combustion velocities and propagation mechanisms of metastable interstitial composites",

abstract = "Combustion velocities were experimentally determined for nanocomposite thermite powders composed of aluminum (Al) fuel and molybdenum trioxide (MoO3) oxidizer under well-confined conditions. Pressures were also measured to provide detailed information about the reaction mechanism. Samples of three different fuel particle sizes (44, 80, and 121 nm) were analyzed to determine the influence of particle size on combustion velocity. Bulk powder density was varied from approximately 5% to 10% of the theoretical maximum density (TMD). The combustion velocities ranged from approximately 600 to 1000 ms. Results indicate that combustion velocities increase with decreasing particle size. Pressure measurements indicate that strong convective mechanisms are integral in flame propagation.",

author = "Bockmon, {B. S.} and Pantoya, {M. L.} and Son, {S. F.} and Asay, {B. W.} and Mang, {J. T.}",

note = "Funding Information: The authors would like to thank the Los Alamos National Laboratory for financial support through the Advanced Energetics Initiative and the Defense Threat Reduction Agency (DTRA). James Busse and Ed Roemer are gratefully acknowledged for their advice and assistance with these experiments. One of the authors (M.P.) additionally acknowledges the U.S. Army Research Office (W911NF-04-1-0217).",

year = "2005",

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doi = "10.1063/1.2058175",

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AU - Bockmon, B. S.

AU - Pantoya, M. L.

AU - Son, S. F.

AU - Asay, B. W.

AU - Mang, J. T.

N1 - Funding Information: The authors would like to thank the Los Alamos National Laboratory for financial support through the Advanced Energetics Initiative and the Defense Threat Reduction Agency (DTRA). James Busse and Ed Roemer are gratefully acknowledged for their advice and assistance with these experiments. One of the authors (M.P.) additionally acknowledges the U.S. Army Research Office (W911NF-04-1-0217).

PY - 2005/9/15

Y1 - 2005/9/15

N2 - Combustion velocities were experimentally determined for nanocomposite thermite powders composed of aluminum (Al) fuel and molybdenum trioxide (MoO3) oxidizer under well-confined conditions. Pressures were also measured to provide detailed information about the reaction mechanism. Samples of three different fuel particle sizes (44, 80, and 121 nm) were analyzed to determine the influence of particle size on combustion velocity. Bulk powder density was varied from approximately 5% to 10% of the theoretical maximum density (TMD). The combustion velocities ranged from approximately 600 to 1000 ms. Results indicate that combustion velocities increase with decreasing particle size. Pressure measurements indicate that strong convective mechanisms are integral in flame propagation.

AB - Combustion velocities were experimentally determined for nanocomposite thermite powders composed of aluminum (Al) fuel and molybdenum trioxide (MoO3) oxidizer under well-confined conditions. Pressures were also measured to provide detailed information about the reaction mechanism. Samples of three different fuel particle sizes (44, 80, and 121 nm) were analyzed to determine the influence of particle size on combustion velocity. Bulk powder density was varied from approximately 5% to 10% of the theoretical maximum density (TMD). The combustion velocities ranged from approximately 600 to 1000 ms. Results indicate that combustion velocities increase with decreasing particle size. Pressure measurements indicate that strong convective mechanisms are integral in flame propagation.

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Combustion velocities and propagation mechanisms of metastable interstitial composites

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