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Effect of Titanium and Zirconium Hydrides on the Detonation Heat of RDX‐based Explosives – A Comparison to Aluminium
Author(s) -
Cudziło Stanisław,
Trzciński Waldemar A.,
Paszula Józef,
Szala Mateusz,
Chyłek Zbigniew
Publication year - 2018
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.201700237
Subject(s) - detonation , titanium , explosive material , aluminium , zirconium , materials science , metal , energetic material , calorimeter (particle physics) , standard enthalpy of formation , metallurgy , inorganic chemistry , chemistry , chemical engineering , organic chemistry , detector , electrical engineering , engineering
Detonation heats of RDX‐based non‐ideal explosives containing 15, 30 and 45 % of Al, (Al/ZrH 2 ), TiH 2 and ZrH 2 were measured with a water calorimeter set. To get more information on the behaviour of the additives in the detonations performed in an argon atmosphere, the solid post‐detonation products extracted from the calorimetric bomb were analysed to determine their elemental and phase compositions. The calorimetric heats were compared with the detonation energies obtained from thermochemical calculations. All the tested explosives produce more energy during detonation in the bomb than RDX itself, but only aluminium positively influences the total energy release. The results of thermal and XRD analyses indicate that post‐detonation products contain mainly carbonaceous materials, metal oxides, unreacted hydrides and/or the metals. Unexpectedly TiH 2 is the least reactive additive. At TiH 2 content of 45 %, the heat effect is close to that of calculated with an assumption of complete inertness of the additive. Moreover TiH 2 and metallic titanium are present in the bomb residues in a significant amount.