Effect of the thermal treatment on the phase composition of the surface of coatings based on Si–B–ZrB2 and modified with ZrO2 fibers
- Authors: Ban’kovskaya I.B.1, Polyakova I.G.1, Kolovertnov D.V.1, Ul’yanova T.M.2
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Affiliations:
- Grebenshchikov Institute of Silicate Chemistry
- Institute of General and Inorganic Chemistry
- Issue: Vol 43, No 2 (2017)
- Pages: 170-173
- Section: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/215949
- DOI: https://doi.org/10.1134/S1087659617020031
- ID: 215949
Cite item
Abstract
Coatings on graphite that are stable to oxidation and based on the silicon–boron–zirconium boride composite containing from 5 to 50% of fibrous zirconium dioxide as a modifying dopant have been produced by the suspension–annealing method. A nonporous layer is formed at the zirconium dioxide content ranging from 5 to 15%, while a porous layer is formed at its 50% content. A glass-forming melt, as well as zirconium dioxide and silicate, is formed during thermal treatment as a result of the chemical reactions with the oxygen in air. The zirconium silicate content increases, along with the modifier’s concentration and temperature.
About the authors
I. B. Ban’kovskaya
Grebenshchikov Institute of Silicate Chemistry
Author for correspondence.
Email: inbankov@isc1.nw.ru
Russian Federation, St. Petersburg, 199034
I. G. Polyakova
Grebenshchikov Institute of Silicate Chemistry
Email: inbankov@isc1.nw.ru
Russian Federation, St. Petersburg, 199034
D. V. Kolovertnov
Grebenshchikov Institute of Silicate Chemistry
Email: inbankov@isc1.nw.ru
Russian Federation, St. Petersburg, 199034
T. M. Ul’yanova
Institute of General and Inorganic Chemistry
Email: inbankov@isc1.nw.ru
Belarus, Minsk, 220072