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Reactions in the system ZrC-ZrB2

  • Powder Metallurgical Materials, Parts, and Coatings
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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

It is shown that in the system ZrC-ZrB2 there is virtually no intersolubility of the components up to 2100°C, and it is only at a temperature of 2650°C that some dissolution of ZrB2 (<2 wt.%) is observed. Using data yielded by x-ray diffraction and metallographic examinations and measurements of the initial melting temperatures of ZrC-ZrB2 alloys and of the microhardness of their structural components, a constitution diagram has been constructed for the system under investigation. The diagram is of the eutectic type, with Te=2660±40°C and a eutectic composition of 57 ZrB2 and 43 mole% ZrC.

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Literature cited

  1. V. K. Grigorovich, Heat Resistance and Constitution Diagrams [in Russian], Metallurgiya, Moscow (1969).

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Authors and Affiliations

  1. Lensovet Leningrad Technological Institute, USSR

    S. S. Ordan'yan & V. I. Unrod

Authors
  1. S. S. Ordan'yan
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  2. V. I. Unrod
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Translated from Poroshkovaya Metallurgiya, No. 5 (149), pp. 61–64, May, 1975.

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Ordan'yan, S.S., Unrod, V.I. Reactions in the system ZrC-ZrB2 . Powder Metall Met Ceram 14, 393–395 (1975). https://doi.org/10.1007/BF00807811

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  • DOI: https://doi.org/10.1007/BF00807811

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