Hydride-dehydride fine zirconium powders for pyrotechnics

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Hydride-dehydride fine zirconium powders for pyrotechnics	1 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1615/IntJEnergeticMaterialsChemProp.2020035408

Title: Hydride-dehydride fine zirconium powders for pyrotechnics
Creator: Amelichkin, Ivan V.
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Knyazeva, Elena M.
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Medvedev, Rodion Olegovych
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Muslimova, Alexandra V.
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Nefedov, Roman Andreevich
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Orlov, Vladislav Viktorovich
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Sachkov, Victor Ivanovich
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Sachkova, Anna Sergeevna
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Stepanova, Oyuna B.
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Zhukov, Ilya A.
Date: 2021
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2020035408
Description: In this paper, the possibility of obtaining fine zirconium powders by the hydrogenationdehydrogenation method is studied. The main parameters of the technological process that allow obtaining fine zirconium powders for pyrotechnics are determined. Hydrogenation and dehydrogenation of the samples are carried out in a rotating quartz tube placed in a furnace at temperatures of 380◦C and 850◦C, respectively. Zirconium hydride is milled using tungsten carbide balls to eliminate the presence of impurities. Thus it is possible to obtain a fine zirconium powder with a number-average particle size of 4.527 +- 2.650 Um and a specific surface area of 0.231 m2/g from the initial electrolytic zirconium powder with a number-average particle size of 220 Um and a specific surface area < 0.1 m2/g. The allowed relative error of measuring the specific surface area is +- 5%. Hence it is possible to reduce the particle size of zirconium powder by 54.6 times without changing the composition.