Behavior of Aluminum in Solid Propellant Combustion.

Abstract

The behavior of various aluminum powders was observed during heating in controlled environments, using a hot stage microscope and a specially built hot plate drop apparatus (for rapid heating). Results show the effect of powder type, atmosphere, temperature, and binder type on formation of interconnected and coalesced particles, and help to clarify similar processes operative in the propellant combustion zone. Coalescence (agglomeration) tended to occur above the aluminum melting point, with the breakdown of the oxide shell on the particles (due to expansion of the melting aluminum) being a key factor. Conditions that inhibited contact of molten aluminum between particles inhibited coalescence, but usually caused particles to become interconnected. These conditions included oxidizing atmosphere or presence of propellant binder materials. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 24, 1976
Accession Number
ADA035569

Entities

People

  • E. W. Price
  • R. K. Sigman

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Chemistry
  • Coalescence
  • Combustion
  • Electron Microscopes
  • Ignition
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Melting Point
  • Microscopes
  • Particle Size
  • Particles
  • Propellants
  • Skin
  • Volume

Readers

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