Thermal Characteristics of Zr/BaCrO<sub>4</sub>Heat Paper with Fuel/Oxidizer Compositions

Im, Chae-Nam; Lee, Jungmin; Park, Byeong-June; Kang, Seunggu; Cheong, Hae-Won

doi:10.4313/jkem.2016.29.10.652

Cited by 1 publication

(1 citation statement)

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“…BaCrO 4 is regarded as an essential component of a pyrotechnic delay material because it is useful as a burn rate modifier and a heat source 24 . In addition, since BaCrO 4 is an important component, its stability is essential for normal operation of the pyrotechnic delay.…”

Section: Resultsmentioning

confidence: 99%

A non-calorimetric approach for investigating the moisture-induced ageing of a pyrotechnic delay material using spectroscopies

Ryu

Yang

Yoh

2019

Sci Rep

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The degradation of thermal properties due to ageing such as burning rate and exothermic heat release are unsolved issues faced during a long-term storage of the pyrotechnic substances. Accordingly, we employed various non-calorimetric methods to investigate the thermal performance of pyrotechnic delay, which is exposed to various moisture-rich conditions at extended durations. The chemical and physical changes in the compositions of a pyrotechnic delay comprised of metal fuel (Zr-Ni alloy) and oxidants (KClO4, BaCrO4) are analysed for four different relative humidity levels using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscope and laser-induced breakdown spectroscopy. The calculations using the NASA Chemical Equilibrium with Applications (CEA) software indicated that the heat of reaction for the components stored under the moisture-rich conditions is reduced by more than 50%. Unlike the conventional calorimetric analysis, the present non-calorimetric approach provided the compositional changes as well as the cause and effect of the relevant ageing process of pyrotechnic delay.

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Section: Resultsmentioning

confidence: 99%