ВЛИЯНИЕ БЕТА-?ОБЛУЧЕНИЯ НА ПАРАМЕТРЫ АКТИВНОСТИ МИКРОПОРОШКОВ АЛЮМИНИЯ

Translated title of the contribution: Effect of beta-radiation exposure on the parameters of aluminum micropowders activity

Alexander P. Ilyin, Andrei V. Mostovshchikov, Lyudmila O. Root, Sergey V. Zmanovskiy, Daniyar V. Ismailov, Guzel U. Ruzieva

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The relevance. Aluminum micropowders are the precursors in many industries, such as powder metallurgy, self propagating high temperature synthesis of new materials, hydrogen energy, pyrotechnics and rocket fuels. Improvement of characteristics of aluminum powders contributes to their quality. The known methods of aluminum powders activation by addition of rareearth elements, vanadium compounds, silicon, boron and other elements into the aluminum mixtures composition lead to contamination of aluminum with impurities. radiation exposure of micropowders with the energy less than 8 MeV does not lead to induced radioactivity and activates aluminum micropowders at the same time. The main aim of the paper was reception and explanation of experimental results on the activity parameters of aluminum micropowders after exposure, depending on the radiation dose. Objects: micronscaled aluminium powders ASD6, ASD6М, ASD;8, ASD;10 obtained by aluminium fusion sputtering. Methods: differential thermal analysis, X;ray diffraction analysis, the method of aluminum micropowders exposure with ;radiation, the method of calculation of the activity parameters of aluminum powders. Results. The quantitative indicators of the ASD;6, ASD;6М, ASD;8, ASD;10 aluminum micro;powders reactivity before and after expo; sure in the ELU;4 accelerator by 4;MeV ;radiation (i. e. the energy is significantly lower than the threshold of photonuclear reactions) were obtained in the work. The doses of powder samples exposure were 1, 2, 4 Mrad. After ;radiation exposure the oxidation start tem; perature decreased maximally to 205 °C; maximum oxidation rate increased by 0,19 mg/min (106 m%); the oxidation degree of the ASD;6M micropowder increased by 18,9 %, and of the ASD;10 minimally decreased by 12,3 %; the specific thermal effect of oxidation after all doses of ;radiation increased maximally for ASD;10 by 188,6 kJ/mol. Energy storage by micropowders after ;radiation is caused by the formation of a double electric layer in aluminum particles.

Translated title of the contributionEffect of beta-radiation exposure on the parameters of aluminum micropowders activity
Original languageRussian
Pages (from-to)87-93
Number of pages7
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Volume330
Issue number8
DOIs
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal
  • Economic Geology
  • Management, Monitoring, Policy and Law

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