Influences of Bulking and Porous Structure on Barium Nitrate as Pyrotechnic Oxidants

Abstract

An experimental investigation was carried out to explore the major physical and chemical properties of expanded barium nitrate. Expanded barium nitrate with porous structure was made. The method is as follows: moderately evaporate the solution of barium nitrate and inorganic vesicant; heat the crystallized mixture to decompose the inorganic vesicants. The inorganic vesicants are potassium carbonate, sodium carbonate, ammonium carbonate, ammonium oxalate, potassium acetate, ammonium acetate and ammonium perchlorate. The SEM shows that the modified barium nitrate with potassium carbonate has obvious porous structure. The bulk density of the modified barium nitrate with ammonium perchlorate decreases by 14.6% and the hygroscopicity of that with ammonium oxalate is only 0.06%. The one with sodium carbonate decomposes at 300°C. The safety test shows that both the impact sensitivity and friction sensitivity are 0%.

Nitrocellulose‐Based Green‐Light Illuminants: A Study of Barium Nitrate Particle Size on Spectral Performance

“…While this is typically paired with a chlorine donor to produce the dominant, metastable, green-light emitting barium (I) chloride, other potential green-light emitting species include BaOH. Due to the high decomposition temperature of Ba(NO 3 ) 2 (590-600 °C) [23][24][25] and the off-gassing of various NO x species, the decomposition pathway can vary. One such pathway is shown (Equation 1) below.…”