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Effect of nitriding on the oxidation kinetics of niobium

Conclusions

  1. 1.

    The oxidation of niobium in air under, atmospheric pressure in the 600–700°C interval proceeds linearly; in this case, the process begins from a stage of parabolic oxidation to 650°C.

  2. 2.

    The nitriding of niobium specimens in a nitrogen-hydrogen mixture at 900°C significantly improves their oxidation resistance in air.

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Literature cited

  1. 1.

    L. P. Skuratov, V. K. Yatsimirskii, B. A. Lyashenko, and V. D. Dovbnya, "Effect of high temperature and gaseous media on the creep of niobium," Fiz.-khim. Mekh. Mater., No. 6, 98–101 (1983).

  2. 2.

    V. Ya. Zabuga, D. F. Datsenko, G. G. Tsapyuk, and L. P. Dolinskaya, "Gravimetric method ov investigating the oxidation of coal," Khim. Tverd. Topl., No. 5, 41–44 (1983).

  3. 3.

    P. Cofstad, High-temperature Oxidation of Metals, [Russian translation], Mir, Moscow (1969).

  4. 4.

    Yu. M. Lakhtin, Ya. D. Kogan, A. N. Bobok., and F. Ya. Lein, "Heat resistance of nitrided niobium in a vacuum," in: Progressive Methods of Case Hardening [in Russian], Mashinostroenie, Moscow (1979).

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Additional information

Kiev State University. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 15–16, September, 1990.

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Girenkova, N.I., Yatsimirskii, V.K. & Skuratov, L.P. Effect of nitriding on the oxidation kinetics of niobium. Met Sci Heat Treat 32, 656–657 (1990). https://doi.org/10.1007/BF00693331

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Keywords

  • Oxidation
  • Niobium
  • Oxidation Resistance
  • Oxidation Kinetic
  • Interval Proceeds