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Thermodynamics of the impregnation of iron alloys with chromium from a chloride phase

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    A diagram of stable existence of chloride phases in equilibrium with a metallic solution has been constructed for the four-component Fe-Cr-Cl-H system.

  2. 2.

    It is shown that in the chlorination of iron and chromium an equilibrium is set up in which either gaseous chlorides alone or both liquid and gaseous chlorides can coexist with a metallic Fe-Cr solution.

  3. 3.

    Gaseous phase compositions have been determined ensuring the optimum values of parameters and the required degree of impregnation of iron with chromium from a chloride phase, as well as conditions necessary for the continuous impregnation of iron with chromium. It is shown that, to achieve this, provision must be made for the escape of gases from the container.

  4. 4.

    Using calculated data, it is possible to determine the optimum conditions for the diffusion impregnation of iron alloys with chromium through a chloride phase.

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Literature cited

  1. B. N. Arzamasov, V. S. Nekrasov, and L. A. Plmenova, “Thermodynamic principles of and experimental data upon the chemistry of diffusion chromizing in powder media with the aid of ammonium,” Izv. Vyssh. Uchebn. Zaved., Mashinostr., No. 3, 127–131 (1974).

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  4. B. P. Burylev, “Thermodynamic properties of solid alloys of iron with carbon, manganese, silicon, chromium, and nickel,” Izv. Vyssh. Uchebn. Zaved., Chernaya Metall., No. 8, 9–15 (1966).

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Sciences of the Ukrainian SSR, Ukraine

    N. V. Germanyuk, Yu. G. Gurevich, N. R. Frage, I. D. Radomysel'skii & S. G. Napara-Volgina

Authors
  1. N. V. Germanyuk
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  2. Yu. G. Gurevich
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  3. N. R. Frage
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  4. I. D. Radomysel'skii
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  5. S. G. Napara-Volgina
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 6(186), pp. 29–34, June, 1978.

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Germanyuk, N.V., Gurevich, Y.G., Frage, N.R. et al. Thermodynamics of the impregnation of iron alloys with chromium from a chloride phase. Powder Metall Met Ceram 17, 435–439 (1978). https://doi.org/10.1007/BF00795796

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  • DOI: https://doi.org/10.1007/BF00795796

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