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Preparation of Melted-MgO-Based Ceramics Using Metastable Solid δ*-Bi2O3 as a Binder

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Inorganic Materials Aims and scope

Abstract—

We have studied the influence of the sintering temperature and time and the composition and amount of the metastable binder δ*-Bi2O3 on the strength properties of ceramics prepared from cast MgO and demonstrated the feasibility of producing dense ceramics with a hardness of up to 67–68 HRC using the metastable phase δ*-Bi2O3, without mechanical load. A unique feature of the materials studied here is the possibility of bonding starting ceramic particles on account of the high chemical activity of metastable phases and products of their decomposition “at the instant of conversion” as a result of the local increase in temperature due to the exothermic decomposition of the metastable states.

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ACKNOWLEDGMENTS

In this study, we used equipment at the Krasnoyarsk Krai Shared Research Facilities Center, Krasnoyarsk Scientific Center (Federal Research Center), Siberian Branch, Russian Academy of Sciences.

We acknowledge the use of equipment at the Knowledge Intensive Methods for Characterization and Analysis of Novel Materials, Nanomaterials, and Mineral Raw Materials Shared Research Facilities Center, Siberian Federal University federal state autonomous educational institution of higher education.

Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education as part of the state research target for Siberian Federal University, project no. FSRZ-2020-0013.

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Authors and Affiliations

  1. Siberian Federal University, 660041, Krasnoyarsk, Russia

    T. V. Bermeshev, V. P. Zhereb, M. P. Bundin, A. S. Yasinsky, O. V. Yushkova, D. S. Voroshilov, V. M. Bespalov, P. O. Yur’ev, A. S. Samoilo & D. V. Khlystov

  2. Krasnoyarsk Scientific Center (Federal Research Center), Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

    L. S. Tarasova

  3. Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

    E. V. Mazurova

Authors
  1. T. V. Bermeshev
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  2. V. P. Zhereb
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  3. L. S. Tarasova
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  4. M. P. Bundin
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  5. A. S. Yasinsky
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  6. O. V. Yushkova
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  7. D. S. Voroshilov
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  8. V. M. Bespalov
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  9. P. O. Yur’ev
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  10. A. S. Samoilo
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  11. E. V. Mazurova
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  12. D. V. Khlystov
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Correspondence to T. V. Bermeshev.

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The authors declare that they have no conflicts of interest.

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Translated by O. Tsarev

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Bermeshev, T.V., Zhereb, V.P., Tarasova, L.S. et al. Preparation of Melted-MgO-Based Ceramics Using Metastable Solid δ*-Bi2O3 as a Binder. Inorg Mater 59, 105–113 (2023). https://doi.org/10.1134/S0020168523010041

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  • DOI: https://doi.org/10.1134/S0020168523010041

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