Investigation and Development of Methods to Increase the Dispersibility of Aluminum Metal Power
ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY
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A study was undertaken to eliminate or significantly reduce agglomeration of an aluminum powder composed of spherical particles in the size range 2 to 5 micrometers. The investigation was carried out using three approaches 1 addition of free-flow materials to the aluminum powders 2 application of coatings on the aluminum particles and 3 chemical modification of the aluminum surface. Evaluations of the treatments were accomplished by visual observation, elutriation, and sieve analyses. Three treatments were found to give superior dispersible aluminum powders addition of activated carbon, addition of Tullanox-500, and surface treatment of the aluminum spheres with water followed by drying with acetone. Tests performed by MIT Lincoln Laboratory showed that these treated aluminum powders could be ideally dispersed with no subsequent agglomeration.
- Physical Chemistry
- Optical Countermeasures