Investigation of the heat resistance of zirconia coatings generated by microarc oxidation

S. V. Savushkina; M. N. Polyansky; A. M. Borisov; A. V. Vinogradov; V. B. Lyudin; T. E. Dankova; L. E. Agureev

doi:10.1134/S1027451016020336

Investigation of the heat resistance of zirconia coatings generated by microarc oxidation

Authors: Savushkina S.V.¹, Polyansky M.N.¹, Borisov A.M.², Vinogradov A.V.², Lyudin V.B.², Dankova T.E.¹, Agureev L.E.¹
Affiliations:
1. Keldysh Research Center
2. Tsiolkovsky Russian State Technological University
Issue: Vol 10, No 2 (2016)
Pages: 406-411
Section: Article
URL: https://journal-vniispk.ru/1027-4510/article/view/188536
DOI: https://doi.org/10.1134/S1027451016020336
ID: 188536

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Abstract

The heat resistance and thermal conductivity of zirconia coatings with a thickness of ∼200 μm, obtained on zirconium by microarc oxidation, are experimentally investigated. Exposure to nitrogen plasma during thermal tests (temperatures up to 2000°C) results in an increase in the thermal conductivity of the coatings. This is associated with structural changes in the coatings, detected by scanning electron microscopy and X-ray diffraction analysis.