Effect of the thermal treatment on the phase composition of the surface of coatings based on Si–B–ZrB2 and modified with ZrO2 fibers
- Autores: Ban’kovskaya I.1, Polyakova I.1, Kolovertnov D.1, Ul’yanova T.2
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Afiliações:
- Grebenshchikov Institute of Silicate Chemistry
- Institute of General and Inorganic Chemistry
- Edição: Volume 43, Nº 2 (2017)
- Páginas: 170-173
- Seção: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/215949
- DOI: https://doi.org/10.1134/S1087659617020031
- ID: 215949
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Resumo
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.
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Sobre autores
I. Ban’kovskaya
Grebenshchikov Institute of Silicate Chemistry
Autor responsável pela correspondência
Email: inbankov@isc1.nw.ru
Rússia, St. Petersburg, 199034
I. Polyakova
Grebenshchikov Institute of Silicate Chemistry
Email: inbankov@isc1.nw.ru
Rússia, St. Petersburg, 199034
D. Kolovertnov
Grebenshchikov Institute of Silicate Chemistry
Email: inbankov@isc1.nw.ru
Rússia, St. Petersburg, 199034
T. Ul’yanova
Institute of General and Inorganic Chemistry
Email: inbankov@isc1.nw.ru
Belarus, Minsk, 220072