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Application of Cerimetric Methods for Determining the Metallic Aluminum Content in Ultrafine Aluminum Powders
Author(s) -
Fedotova Tatyana D.,
Glotov Oleg G.,
Zarko Vladimir E.
Publication year - 2007
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.200700017
Subject(s) - propellant , aluminium , materials science , explosive material , coating , combustion , chemical engineering , reactivity (psychology) , adsorption , metal , particle (ecology) , particle size , metallurgy , composite material , chemistry , organic chemistry , medicine , alternative medicine , pathology , engineering , oceanography , geology
Ultrafine (nano‐sized) aluminum is a promising component for solid propellants, gel propellants, explosives, etc. The work is focused upon a problem of determining active (metallic) aluminum content in nanoAl powders as one of the characteristics of their reactivity. It is shown that the high reactivity, the presence of either the gases adsorbed or coating matter on the particle surface restricts the traditionally used permanganatometric and volumetric analytic methods. A new technique determining the active aluminum content is presented. This is the adaptation of known cerimetric method based on the analytical reaction Ce 4+ +e − =Ce 3+ . The method can be applied for analysis of metallic aluminum in the probes of nanoAl (including ones with organic coating), as well as micron sized aluminum, and their condensed combustion products.