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Fracture Mechanism of Plasma Thermal Barrier Coatings Made of Zirconia-Based Powder Mixtures of Various Morphologies

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Russian Metallurgy (Metally) Aims and scope

Abstract

The mechanism of fracture of the plasma thermal barrier coatings made of mixtures of zirconia and yttria (5.5 and 7%) powders in the form of solid and hollow spherical particles is studied by sclerometry. The fracture of the coatings is found to occur in the upper layers according to a cohesive mechanism. The coating formed from a powder mixture of the composition ZrO2 + 7% Y2O3 consisting of solid spherical particles has the optimum set of properties.

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Funding

The work was carried out within the Russian State Task for Fundamental Scientific Research for 2021–2023 (the topic no. 0030-2021-0025).

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Authors and Affiliations

  1. Institute of Engineering Science, Russian Academy of Sciences, 603950, Nizhny Novgorod, Russia

    I. N. Tsareva & O. B. Berdnik

  2. AO TsNII Burevestnik, 603024, Nizhny Novgorod, Russia

    M. V. Maksimov

Authors
  1. I. N. Tsareva
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  2. M. V. Maksimov
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  3. O. B. Berdnik
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Corresponding author

Correspondence to I. N. Tsareva.

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Translated by K. Shakhlevich

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Tsareva, I.N., Maksimov, M.V. & Berdnik, O.B. Fracture Mechanism of Plasma Thermal Barrier Coatings Made of Zirconia-Based Powder Mixtures of Various Morphologies. Russ. Metall. 2021, 386–391 (2021). https://doi.org/10.1134/S0036029521040352

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  • DOI: https://doi.org/10.1134/S0036029521040352

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