Abstract
The effect of vanadium-containing activating additives on the oxidation of an ASD-4 aluminum powder subjected to low-rate heating in the air is studied. The tests are conducted for a number of activators introduced by impregnating the metal powder with vanadium-containing gels with the following compositions: Li2V12O31 · nH2O, Na2V12O31 · nH2O, Na2MoV11O31 · nH2O, V2O5 · nH2O, and 6V2O5 · B2O3 · nH2O. A gel-preparation method based on the instantaneous cooling of melts of the respective reagents in cold water is proposed. It is found that the oxidation of the activated powders is shifted to a low-temperature region.
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