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Zhurnal Tekhnicheskoi Fiziki, 2018, Volume 88, Issue 8, Pages 1259–1263
DOI: https://doi.org/10.21883/JTF.2018.08.46318.2590
(Mi jtf5850)
 

This article is cited in 6 scientific papers (total in 6 papers)

Physical electronics

Parameters of iron and aluminum nano- and micropowder activity upon oxidation in air under microwave irradiation

A. V. Mostovshchikov, A. P. Ilyin, P. Yu. Chumerin, Yu. G. Yushkov

Tomsk Polytechnic University
Full-text PDF (318 kB) Citations (6)
Abstract: Iron nanopowders and iron and aluminum micropowders exposed to microwave radiation with a frequency of 9.4 GHz and a power density of 80 W/cm$^2$ at a pulse repetition rate of 400 Hz have been investigated. According to the results of differential thermal analysis, the microwave radiation caused nonmonotonic changes in the thermal properties of the A1 and Fe powders. After irradiation of the iron nanopowder, the temperature of the onset of its oxidation increased from 150.01 to 158.75$^{\circ}$C; in the case of the micropowder, the temperature nonmonotonically changed from 150.00 to 275.38$^{\circ}$C. The specific heat of oxidation of the Fe nanopowder increased by 17.3% at maximum, while in the Fe micropowder the maximum attained increase was 13%. For the Al micropowder, the maximum increase in the specific heat of oxidation was found to be 59.7%. Microwave irradiation leads to the formation of electron avalanches, which reduce metal ions in their oxides. At the same time, at certain irradiation doses the generated electron flows oxidize the reduced metals, which is reflected in the nonmonotonic variation in the properties of a material. The increase in the specific heat of oxidation is related to the participation of energy-saturated states of the metals in the oxidation processes.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation 11.1928.2017/4.6
Received: 07.12.2017
English version:
Technical Physics, 2018, Volume 63, Issue 8, Pages 1223–1227
DOI: https://doi.org/10.1134/S1063784218080133
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. V. Mostovshchikov, A. P. Ilyin, P. Yu. Chumerin, Yu. G. Yushkov, “Parameters of iron and aluminum nano- and micropowder activity upon oxidation in air under microwave irradiation”, Zhurnal Tekhnicheskoi Fiziki, 88:8 (2018), 1259–1263; Tech. Phys., 63:8 (2018), 1223–1227
Citation in format AMSBIB
\Bibitem{MosIlyChu18}
\by A.~V.~Mostovshchikov, A.~P.~Ilyin, P.~Yu.~Chumerin, Yu.~G.~Yushkov
\paper Parameters of iron and aluminum nano- and micropowder activity upon oxidation in air under microwave irradiation
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2018
\vol 88
\issue 8
\pages 1259--1263
\mathnet{http://mi.mathnet.ru/jtf5850}
\crossref{https://doi.org/10.21883/JTF.2018.08.46318.2590}
\elib{https://elibrary.ru/item.asp?id=35269896}
\transl
\jour Tech. Phys.
\yr 2018
\vol 63
\issue 8
\pages 1223--1227
\crossref{https://doi.org/10.1134/S1063784218080133}
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  • This publication is cited in the following 6 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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