Investigation of the oxidative resistance of high-temperature coating on a SiC material under exposure to high-enthalpy flow

The method, procedure, and results of the investigation of a high-speed air plasma flow effect on the structure of an ultrahigh-temperature coating made for a composite silicon carbide material are considered. The coating is based on hafnium diboride, silicon carbide, and oxides of hafnium, yttrium,...

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Published inHigh temperature Vol. 55; no. 6; pp. 873 - 879
Main Authors Kablov, E. N., Zhestkov, B. E., Grashchenkov, D. V., Sorokin, O. Yu, Lebedeva, Yu. E., Vaganova, M. L.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2017
Springer Nature B.V
Subjects
Air plasma
Atoms and Molecules in Strong Fields
Catalysis
Catalytic activity
Classical and Continuum Physics
Coating effects
Computer simulation
Enthalpy
Hafnium compounds
High speed
Industrial Chemistry/Chemical Engineering
Laser Matter Interaction
Materials Science
Oxidation resistance
Physical Chemistry
Physics
Physics and Astronomy
Silicon carbide
Temperature distribution
Thermophysical Properties of Materials
Upper atmosphere
Weight loss measurement
Wind tunnel testing
Wind tunnels
Yttrium oxide
Zirconium
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Summary:The method, procedure, and results of the investigation of a high-speed air plasma flow effect on the structure of an ultrahigh-temperature coating made for a composite silicon carbide material are considered. The coating is based on hafnium diboride, silicon carbide, and oxides of hafnium, yttrium, and zirconium. The effect of a high-speed plasma flow on the samples was studied in a VAT-104 wind tunnel (Central Aerohydrodynamic Institute); this facility enables simulation of the conditions of high-velocity flight in the upper atmosphere. During the tests, the main parameters of the plasma flow were recorded, and the temperature distribution of the sample was measured. The weight loss of the samples was determined. Using the results of numerical parametric simulation of flow past and heat transfer of the samples, the catalytic activity of the coating was determined. After testing in a high-enthalpy flow, X-ray diffraction analysis and X-ray phase analysis of the samples were performed, and their surface microstructure was analyzed.
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X17060086