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Carburization of Heat-Exchanger Pipes of 09Kh18N9 Grade Steel in Contact with Sodium Coolant

  • METAL SCIENCES. METALLURGY
  • Published:
Inorganic Materials: Applied Research Aims and scope

Abstract

The carburization process of heat-exchanger piping of 09Kh18N9 grade steel in contact with sodium coolant under conditions of long-term service at 515°С has been investigated. An effective diffusion coefficient has been determined on the basis of the experimental data on carbon concentration in the metal surface layer; the carburization depth within the temperature range 450–515°С has been calculated.

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Notes

  1. Experimental data on the carburized layer depth following the service for 55 000 and 94 000 h were earlier obtained by researchers at the National Research Center Kurchatov Institute—Central Research Institute of Structural Materials Prometey.

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Correspondence to A. S. Kudryavtsev.

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Translated by D. Marinin

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Kudryavtsev, A.S., Okhapkin, K.A. Carburization of Heat-Exchanger Pipes of 09Kh18N9 Grade Steel in Contact with Sodium Coolant. Inorg. Mater. Appl. Res. 9, 1006–1011 (2018). https://doi.org/10.1134/S207511331806014X

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