Combustion of aluminum particles in fluorine containing environments

L. F. Ernst, R. A. Yetter, F. L. Dryer, T. P. Parr, D. M. Hanson-Parr

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Experimental and modeling results on the combustion of single, isolated aluminum particles in quiescent environments consisting of pure SF6 and in mixtures of SF6, O2 and Ar are reported. Combustion measurements consisted of photographic observations and electron probe microanalysis (EPMA) of the condensed-phase product composition and radial distribution. Numerical results are based on a local equilibrium model in which species diffusion is assumed to be rate limiting. Aluminum particles in pure SF6 atmospheres were visually observed to bum without condensed phase products in the surrounding envelope flames. The model predicts the measured bum rates within approximately 20% and qualitatively predicts radial profile speciation. In mixtures with low quantities of O2 in SF6, the final products shifted from AlF3 to A1F2O and again Al2O3(l) formation was minimized.

Original languageEnglish (US)
StatePublished - Jan 1 1999
Event35th Joint Propulsion Conference and Exhibit, 1999 - Los Angeles, United States
Duration: Jun 20 1999Jun 24 1999

Other

Other35th Joint Propulsion Conference and Exhibit, 1999
CountryUnited States
CityLos Angeles
Period6/20/996/24/99

Fingerprint

Fluorine
Aluminum
Electron probe microanalysis
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Systems Engineering
  • Aerospace Engineering

Cite this

Ernst, L. F., Yetter, R. A., Dryer, F. L., Parr, T. P., & Hanson-Parr, D. M. (1999). Combustion of aluminum particles in fluorine containing environments. Paper presented at 35th Joint Propulsion Conference and Exhibit, 1999, Los Angeles, United States.
Ernst, L. F. ; Yetter, R. A. ; Dryer, F. L. ; Parr, T. P. ; Hanson-Parr, D. M. / Combustion of aluminum particles in fluorine containing environments. Paper presented at 35th Joint Propulsion Conference and Exhibit, 1999, Los Angeles, United States.
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Ernst, LF, Yetter, RA, Dryer, FL, Parr, TP & Hanson-Parr, DM 1999, 'Combustion of aluminum particles in fluorine containing environments', Paper presented at 35th Joint Propulsion Conference and Exhibit, 1999, Los Angeles, United States, 6/20/99 - 6/24/99.

Combustion of aluminum particles in fluorine containing environments. / Ernst, L. F.; Yetter, R. A.; Dryer, F. L.; Parr, T. P.; Hanson-Parr, D. M.

1999. Paper presented at 35th Joint Propulsion Conference and Exhibit, 1999, Los Angeles, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Combustion of aluminum particles in fluorine containing environments

AU - Ernst, L. F.

AU - Yetter, R. A.

AU - Dryer, F. L.

AU - Parr, T. P.

AU - Hanson-Parr, D. M.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Experimental and modeling results on the combustion of single, isolated aluminum particles in quiescent environments consisting of pure SF6 and in mixtures of SF6, O2 and Ar are reported. Combustion measurements consisted of photographic observations and electron probe microanalysis (EPMA) of the condensed-phase product composition and radial distribution. Numerical results are based on a local equilibrium model in which species diffusion is assumed to be rate limiting. Aluminum particles in pure SF6 atmospheres were visually observed to bum without condensed phase products in the surrounding envelope flames. The model predicts the measured bum rates within approximately 20% and qualitatively predicts radial profile speciation. In mixtures with low quantities of O2 in SF6, the final products shifted from AlF3 to A1F2O and again Al2O3(l) formation was minimized.

AB - Experimental and modeling results on the combustion of single, isolated aluminum particles in quiescent environments consisting of pure SF6 and in mixtures of SF6, O2 and Ar are reported. Combustion measurements consisted of photographic observations and electron probe microanalysis (EPMA) of the condensed-phase product composition and radial distribution. Numerical results are based on a local equilibrium model in which species diffusion is assumed to be rate limiting. Aluminum particles in pure SF6 atmospheres were visually observed to bum without condensed phase products in the surrounding envelope flames. The model predicts the measured bum rates within approximately 20% and qualitatively predicts radial profile speciation. In mixtures with low quantities of O2 in SF6, the final products shifted from AlF3 to A1F2O and again Al2O3(l) formation was minimized.

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Ernst LF, Yetter RA, Dryer FL, Parr TP, Hanson-Parr DM. Combustion of aluminum particles in fluorine containing environments. 1999. Paper presented at 35th Joint Propulsion Conference and Exhibit, 1999, Los Angeles, United States.