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Interaction Between Aluminum Nitride-Based Composite Materials and a CaCl2 – KCl Eutectic Molten Salt Solution

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Refractories and Industrial Ceramics Aims and scope

Abstract

The interaction between composite materials based on aluminum nitride and a phosphate binder (PB) and a CaCl2 – KCl molten salt solution is studied as a function of time (10 – 220 h) by a gravimetric method. The test specimens studied were sintered (AlN + PB)-based composite, hot-pressed Y2O3-doped aluminum nitride, graphite, and (AlN + PB)-coated graphite. The concentration of aluminum and phosphor in the molten phase tend to increase with time; presumably, Al and P occur in solution in the form of calcium aluminates, phosphates, or alumophosphates. Of the two processes — dissolution of the phosphate binder and oxidation of the aluminum nitride matrix — the former is prevailing.

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Authors and Affiliations

  1. Eastern Institute of Refractories Research and Production Association Joint-Stock Co., Ekaterinburg, Russia

    L. B. Khoroshavin

  2. Ural State Technical University, Ekaterinburg, Russia

    A. R. Beketov, D. A. Beketov & Yu. P. Zaikov

  3. Ural Branch of the Russian Academy of Sciences, Institute of High-Temperature Electrochemistry, Ekaterinburg, Russia

    V. V. Chebykin

Authors
  1. L. B. Khoroshavin
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  2. A. R. Beketov
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  3. D. A. Beketov
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  4. Yu. P. Zaikov
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  5. V. V. Chebykin
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Khoroshavin, L.B., Beketov, A.R., Beketov, D.A. et al. Interaction Between Aluminum Nitride-Based Composite Materials and a CaCl2 – KCl Eutectic Molten Salt Solution. Refractories and Industrial Ceramics 43, 289–294 (2002). https://doi.org/10.1023/A:1022334515579

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  • DOI: https://doi.org/10.1023/A:1022334515579

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