THE FORMATION AND PROPERTIES OF ALUMINUM BLACKS

Authors
  1. McGowan, S.
Corporate Authors
Defence Research Chemical Labs, Ottawa ONT (CAN)
Abstract
The optical density of aluminum deposits, formed 8 cm. from the filament by evaporation of the metal in helium, has been found to be large relative to the mass and to be essentially constant from 0.2 to 2.6 microns for pressures ranging from 1 to 20 mm. of mercury. The aluminum blacks were roughly spherical particles joined together to form an open network which seemed to be quite rigid. Experimental evidence indicated that particle formation and much of the grouping of the particles took place in the gas. Diffraction of electromagnetic waves is inadequate in explaining the high absorption and low reflection efficiencies of aluminum blacks.
Report Number
DRCL-308 — Previously accessioned as DSIS 60/01105
Date of publication
15 Oct 1959
Number of Pages
19
DSTKIM No
92-03805
CANDIS No
127151
Format(s):
Hardcopy;Originator's fiche received by DSIS

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