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Low-temperature synthesis of micron nitride powders of the Fe-N system

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Abstract

The practical possibility of synthesizing micron-size corrosion-resistant powder materials based on lower and higher nitrides of the Fe-N system in the form of both a bulk composition and a “core-shell” system was implemented at relatively low temperatures. Information on the elemental and chemical composition of iron nitrides was obtained using the methods of Auger electron spectroscopy and X-ray quantitative analysis. Fe3N and Fe4N phases were identified in the volume of microcrystals in the form of compositions with unreacted α-Fe without foreign impurities in the temperature range of 300–350°C. The highest mass concentration of the Fe4N phase was observed at 350°C and a nitriding time of 60 min (α-Fe, 14.70%; Fe3N, 24.50%; and Fe4N, 60.80%). Porous nanocoatings were synthesized on the surfaces of carbonyl iron microparticles at 165°C and a synthesis time of 420 min. This nanocoating has a thickness of ∼10–15 nm and, in the first approximation, corresponds to the ∼Fe15.7N2 compound.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991, Russia

    E. P. Kovalev, M. I. Alymov, A. B. Ankudinov, A. G. Gnedovets & V. A. Zelenskii

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  1. E. P. Kovalev
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  2. M. I. Alymov
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  3. A. B. Ankudinov
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  4. A. G. Gnedovets
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  5. V. A. Zelenskii
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Correspondence to E. P. Kovalev.

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Original Russian Text © E.P. Kovalev, M.I. Alymov, A.B. Ankudinov, A.G. Gnedovets, V.A. Zelenskii, 2013, published in Perspektivnye Materialy, 2013, No. 7, pp. 61–66.

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Kovalev, E.P., Alymov, M.I., Ankudinov, A.B. et al. Low-temperature synthesis of micron nitride powders of the Fe-N system. Inorg. Mater. Appl. Res. 5, 168–172 (2014). https://doi.org/10.1134/S2075113314020105

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  • DOI: https://doi.org/10.1134/S2075113314020105

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