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TVT, 2019, Volume 57, Issue 5, paper published in the English version journal (Mi tvt11175)  

Papers published in the English version of the journal
Heat and Mass Transfer and Physical Gasdynamics

Perspective heat-resistant coating for protection of C$_f$/SiC composites in air plasma hypersonic flow

A. N. Astapov, I. P. Lifanov, L. N. Rabinskii

Moscow Aviation Institute (National Research University)

Abstract: The investigation results on development and testing of heat-resistant coating with experimental composition of $ Si$–$\rm TiSi_2$$\rm MoSi_2$$\rm TiB_2$$\rm CaSi_2$ for protection of C$_f$/SiC composites from oxidation and highspeed erosion in high-speed gas flows are presented. This coating was formed by slip firing technology out of slip compositions with filler based on heterophase powder of the system of interest. The results of fire bench tests of samples with coating under conditions of flow-around and off balance heating by air plasma streams with $\rm M = 5.5$$6.0$ and enthalpy of $40$$45$ MJ/kg. The effectiveness of the protective action of coating at surface temperature $T_w = 1810$$1820^{\circ}$C is kept not less than $920$$930$ s, at $T_w \ge 1850$$1860^{\circ}$C—not less than $420$$430$ s. It was found that the effectiveness of coating is provided by structural-phase state of the base coating and formation of heterogeneous oxide film on its surface formed by borosilicate glass with titanium and calcium segregation heterogeneity and $\rm TiO_2$ reinforce micro-needles in the form of rutile. The decrease in saturated steam pressure level in oxide film–coating system induced by increase in the level of external layer heterogeneity was experimentally confirmed.

Funding Agency Grant Number
Russian Science Foundation 17-79-10325
The work was carried out within the framework of the grant of the Russian National Foundation for the event “Conducting Initiative Research by Young Scientists” of the Presidential Program for Research Projects (Agreement no. 17-79-10325 of July 25, 2017).

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English version:
High Temperature, 2019, 57:5, 744–752

Bibliographic databases:

Received: 02.02.2019
Revised: 27.03.2019
Accepted:08.04.2019
Language:

Citation: A. N. Astapov, I. P. Lifanov, L. N. Rabinskii, “Perspective heat-resistant coating for protection of C$_<span style=f̈ont-style: normal; font-weight: normal\">f</span>$/SiC composites in air plasma hypersonic flow”, High Temperature, 57:5 (2019), 744–752

Citation in format AMSBIB
\Bibitem{AstLifRab19}
\by A.~N.~Astapov, I.~P.~Lifanov, L.~N.~Rabinskii
\paper Perspective heat-resistant coating for protection of C$_<span style=\"font-style: normal; font-weight: normal\">f</span>$/SiC composites in air plasma hypersonic flow
\jour High Temperature
\yr 2019
\vol 57
\issue 5
\pages 744--752
\mathnet{http://mi.mathnet.ru/tvt11175}
\crossref{https://doi.org/10.1134/S0018151X19050018}
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\elib{http://elibrary.ru/item.asp?id=41701726}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85074578143}


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