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Fabrication, Structure, and Mechanical Properties of Composite Oxide Fibers for Brittle-Matrix Composites

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Abstract—Composite fibers of starting mixtures of aluminum, yttrium, and calcium oxides and fibrous composite materials consisting of these fibers and a molybdenum matrix are fabricated by internal crystallization. The structure, the strength, and the cracking resistance of the fibers are studied in the temperature range 20–1400°C. Inductile components are shown to be used to form composite materials with quasi-plastic behavior, and their cracking resistance can be 20–25 MPa m1/2.

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ACKNOWLEDGMENTS

We thank S.T. Mileiko for helpful discussions and S.A. Abashkin, A.Ya. Mitskevich, N.A. Prokopenko, and V.A. Chumichev for their help in performing the experiments.

Funding

This work was performed according to state assignment 0032-2017-002 and was supported by the Russian Foundation for Basic Research, project no. 17-03-01136.

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    V. M. Kiiko, A. A. Kolchin & N. I. Novokhatskaya

Authors
  1. V. M. Kiiko
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  2. A. A. Kolchin
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  3. N. I. Novokhatskaya
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Correspondence to V. M. Kiiko.

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Translated by K. Shakhlevich

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Kiiko, V.M., Kolchin, A.A. & Novokhatskaya, N.I. Fabrication, Structure, and Mechanical Properties of Composite Oxide Fibers for Brittle-Matrix Composites. Russ. Metall. 2019, 1002–1008 (2019). https://doi.org/10.1134/S0036029519100148

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  • DOI: https://doi.org/10.1134/S0036029519100148

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