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Behavior of titanium, zirconium, and vanadium nitrides in composites containing a nickel-molybdenum alloy

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    TiN-Ni-Mo, ZrN-Ni-Mo, and VN-Ni-Mo cermets were produced, under various conditions, by the methods of hot pressing and sintering in a Tammann furnace provided with a hydrogen atmosphere.

  2. 2.

    A study was made of the microstructure and microhardness of the composites investigated.

  3. 3.

    Hot-pressed specimens of TiN-Ni-Mo, ZrN-Ni-Mo, and VN-Ni-Mo composites were found to have two-phase structures and to exhibit some intersolubility of their components. It is shown that the reactions in the systems investigated involve the formation of limited solid solutions and are accompanied by recrystallization of the titanium, zirconium, and vanadium nitrides through a molten Ni-Mo binder phase.

  4. 4.

    No titanium nitride recrystallization was observed during the sintering of TiN-Ni-Mo composite specimens at temperatures of up to 1550°C in a Tammann furnace provided with a hydrogen atmosphere. Data yielded by microhardness measurements indicate that, under such sintering conditions, TiN reacts with a graphite boat, with the formation of a TiN-TiC solid solution.

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Authors and Affiliations

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

    V. T. Bondar'

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  1. V. T. Bondar'
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Translated from Poroshkovaya Metallurgiya, No. 4 (136), pp. 68–73, April, 1974.

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Bondar', V.T. Behavior of titanium, zirconium, and vanadium nitrides in composites containing a nickel-molybdenum alloy. Powder Metall Met Ceram 13, 309–313 (1974). https://doi.org/10.1007/BF00796807

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  • DOI: https://doi.org/10.1007/BF00796807

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