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Aging of Pyrotechnic Composition. The reliability of x‐ray diffraction data for estimation of the quality of signal mix
Author(s) -
Barišin D.,
BatinićHaberle I.,
Jovaniáć P.
Publication year - 1989
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.19890140608
Subject(s) - diffraction , analytical chemistry (journal) , adiabatic process , chemical composition , signal (programming language) , chemistry , intensity (physics) , wavelength , materials science , optics , physics , thermodynamics , computer science , environmental chemistry , optoelectronics , organic chemistry , programming language
The physical and chemical characteristics of green signal pyrotechnic mix, before and after destabilization caused by the action of increased humidity at different temperatures, were determined. Data obtained by the means of X‐ray diffraction. IR spectroscopy and adiabatic calorimetry were compared with the results acquired by measuring functional characteristics (the dominant wavelength and the colour hue of the emitted light, the intensity of the emission and the rate of burning). Comparision of all of these results points out to the very close relationship between the X‐ray diffraction data and the function of the signal mix. Chemical changes, leading to the disuse of the examinated mix, were recognized as Mg(OH) 2 , BaCO 3 and Ba(NO 2 ) 2 formation with concomittant decrease in Mg and Ba(NO 3 ) 2 content. Since no changes were observed in separately aged components, the interaction among components proved to be of essential importance.