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Electron-microprobe investigations of interfacial reactions in systems composed of a refractory compound and a liquid metal

3. Effects of carbon on the contact reaction in the system ZrC-Ni

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    A study was made, by the technique of electron-probe microanalysis, of the character of the reaction in the system ZrC-Ni. It is shown that the solubility of nickel in zirconium carbide amounts to 2.5-2 wt.%.

  2. 2.

    The effects were investigated of the addition of carbon (from 0 to 7 wt.%) to nickel upon the dissolution of the latter in zirconium carbide. It was found that carbon inhibits the penetration of nickel into the carbide and reduces the depth of the resultant diffusion zone.

  3. 3.

    The phase composition of the metal drop after its reaction with zirconium carbide was determined. It is demonstrated that the reaction leads to the formation of a nickel-base solid solution, a carbide eutectic, and the intermetallic compound ZrNi5.

  4. 4.

    A study of the distribution of nickel in zirconium carbide grains established that the variation in nickel concentration between the boundary of a grain and its core obeys a parabolic law.

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Authors and Affiliations

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

    G. V. Samsonov, O. P. Sharkin, A. D. Panasyuk, G. K. Kozina & L. V. D'yakonova

Authors
  1. G. V. Samsonov
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  2. O. P. Sharkin
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  3. A. D. Panasyuk
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  4. G. K. Kozina
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  5. L. V. D'yakonova
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 8(152), pp. 53–58, August, 1975.

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Samsonov, G.V., Sharkin, O.P., Panasyuk, A.D. et al. Electron-microprobe investigations of interfacial reactions in systems composed of a refractory compound and a liquid metal. Powder Metall Met Ceram 14, 649–653 (1975). https://doi.org/10.1007/BF00794467

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  • DOI: https://doi.org/10.1007/BF00794467

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