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Aero-abrasive wear resistance of zirconium carbide base cermets

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    A study was made of the intensity of wear of ZrC-Nb, ZrC-Mo, and ZrC-W cermets with metal-to-carbide ratios of 25∶75, 50∶50, and 75∶25 at.%/mole %, in tests involving exposure to an aero-abrasive stream.

  2. 2.

    It was established that the intensity of wear of these cermets is determined by the angle of attack (being a maximum at 90°) and their phase composition. The addition of 25 at.% Nb (Mo, W) increases 20-to 30-fold the wear resistance of ZrC (the improvement in wear resistance decreasing in the order Nb > Mo > W). Other things being equal, increasing the amount of metallic binder above this level reduces the hardness, combined carbon content, and wear resistance of the cermets.

  3. 3.

    The wear resistance of cermets belonging to any one system is determined by their hardness and chemical composition, while the wear resistance of cermets from different systems is determined by their chemical composition and combination of hardness and ductility; for the systems investigated, it diminishes in the order ZrC-Nb > ZrC-Mo > ZrC-W.

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Literature cited

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Translated from Poroshkovaya Metallurgiya, No. 12 (132), pp. 75–80, December, 1973.

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Samsonov, G.V., Dan'kin, A.A., Bogomol, I.V. et al. Aero-abrasive wear resistance of zirconium carbide base cermets. Powder Metall Met Ceram 12, 1003–1007 (1973). https://doi.org/10.1007/BF00791747

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  • DOI: https://doi.org/10.1007/BF00791747

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