Science and Technology of Energetic Materials

Vol.67, No.2 (2006)

Research paper

Effect of zirconium coating on the reactivity of zirconium-potassium perchlorate composition (*in Japanese)
Hidetsugu Nakamura, Atsusi Sibasaki, Miyako Akiyoshi, and Hiroyuki Taniguchi


Zirconium powder was treated by the acetone solutions which contained coating agents such as fureororesin Viton A, epoxyresin Epicoat, and stearic acid. Then, sensitivities of zirconium powder with and without coating, and their mixtures with potassium perchlorate were studied by thermal analysis, friction sensitivity test, electrostatic sensitivity test, etc. The results were as follows.

The mixture of zirconium powder with potassium perchlorate had high sensitivities, which were resemble to primary explosives such as lead azide, though it misfired in drop hammer test. The coating of zirconium made its oxidative reactivity in air and the thermal reactivity of its mixture with potassium perchlorate in Ar lower. The coating also made the sensitivities of its mixture with potassium perchlorate lower, but the mixture still had a explosion hazard because of its high sensitivities in friction and electrostaticity.

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Zirconium, Potassium perchlorate, Sensitivity, Thermal analysis, Coating

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