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Interaction of tantalum with nitrogen and air

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  1. 1.

    Nitrogen begins to penetrate into tantalum at 700–800°C and oxygen from the air at about 300°C.

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    At temperatures not exceeding 1600°C, vacuum annealing of tantalum previously exposed to nitrogen and air leads to the diffusion of nitrogen and oxygen from the surface into the core of the metal.

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    During annealing in vacuum (1·10−4 mm Hg) oxygen and nitrogen are driven off only at temperatures of 1800–2300°C.

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    Nitrogen and oxygen in the solid solution greatly inhibit the grain growth of tantalum.

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Literature Cited

  1. 1.

    E. Gulbransen and K. Andren, J. of Metals,188, No. 3 (1950).

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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 37–40, December, 1966.

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Gavrilyuk, M.I., Ershova, V.T. & Konstantinov, V.A. Interaction of tantalum with nitrogen and air. Met Sci Heat Treat 8, 998–1000 (1966). https://doi.org/10.1007/BF00653000

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  • Oxygen
  • Nitrogen
  • Solid Solution
  • Tantalum
  • Vacuum Annealing