Conclusions
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1.
Accelerated diffusion during ion nitriding is due to the more rapid creation of a surface layer with the limit nitrogen concentration and elevated dislocation density.
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2.
A preeminence in the rate of formation of a layer with the limit nitrogen concentration in the surface of iron samples during ion and gas nitriding at 550°C was observed only in the first 10 min.
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3.
Under the influence of ion bombardment the self-diffusion coefficient of nickel at 700°C increases 5.8 times.
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4.
We observed an elevated dislocation density and characteristic direction of the dislocations occurring in iron foil under the influence of ion bombardment at a depth of 0.05 mm.
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Additional information
Moscow Highway Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 21–24, June, 1969.
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Butenko, O.I., Lakhtin, Y.M. The mechanism of accelerated nitrogen diffusion in iron. Met Sci Heat Treat 11, 446–448 (1969). https://doi.org/10.1007/BF00656237
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DOI: https://doi.org/10.1007/BF00656237