Heating of Particles with an Aluminum Core and a Hydroxide Shell

N. S. Shaitura; Шайтура Н. С.; V. V. Artemov; Артемов В. В.; M. N. Larichev; Ларичев М. Н.

doi:10.31857/S0044185622700103

Heating of Particles with an Aluminum Core and a Hydroxide Shell

Authors: Shaitura N.S.¹, Artemov V.V.¹^,2, Larichev M.N.¹
Affiliations:
1. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, 119991, Moscow, Russia
2. Shubnikov Institute of Crystallography, Federal Scientific Research Center “Crystallography and Photonics,” Russian Academy of Sciences, 119991, Moscow, Russia
Issue: Vol 59, No 1 (2023)
Pages: 87-98
Section: НАНОРАЗМЕРНЫЕ И НАНОСТРУКТУРИРОВАННЫЕ МАТЕРИАЛЫ И ПОКРЫТИЯ
URL: https://ruspoj.com/0044-1856/article/view/663866
DOI: https://doi.org/10.31857/S0044185622700103
EDN: https://elibrary.ru/CIVUCX
ID: 663866

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Abstract

Particles with an aluminum core and a hydroxide shell obtained by low-temperature (up to 100°C) oxidation of spherical aluminum micron particles with water are studied. Processes occurring upon heating these particles up to 750°C in a controlled gaseous atmosphere are analyzed. The composition and amount of released gas-phase products are studied, and their nature is determined. The transformation of the shell as a result of the phase transition of aluminum hydroxide to oxide is considered. The mechanism of formation of cracks as a result of thermal expansion of the core and shell during the heating of the particle is considered. Outcrops of aluminum onto the surface of the oxide shell after reaching the melting point of aluminum are noted. It is proposed to use aluminum extruded onto the surface for the formation of bonds between the particles upon executing 3D printing.

About the authors

N. S. Shaitura

Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, 119991, Moscow, Russia

Email: tesh-s@yandex.ru
Россия, 119991, Москва, ул. Косыгина, 4

V. V. Artemov

Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, 119991, Moscow, Russia; Shubnikov Institute of Crystallography, Federal Scientific Research Center “Crystallography and Photonics,” Russian Academy of Sciences, 119991, Moscow, Russia

Email: tesh-s@yandex.ru
Россия, 119991, Москва, ул. Косыгина, 4; Россия, 119991, Москва, Ленинский пр., 38

M. N. Larichev

Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, 119991, Moscow, Russia

Author for correspondence.
Email: tesh-s@yandex.ru
Россия, 119991, Москва, ул. Косыгина, 4

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