Open AccessINVESTIGATION ON CORROSION PROPERTIES OF CARBON-CARBON COMPOSITES
Author(s) -
Yu.A. Gribanov,
И. В. Гурин,
V.V. Gujda,
А. Н. Буколов,
В. В. Колосенко
Publication year - 2020
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2020-125-154
Subject(s) - materials science , composite number , corrosion , composite material , reinforced carbon–carbon , carbon fibers , ceramic matrix composite , heat transfer , matrix (chemical analysis) , physics , thermodynamics
The corrosion resistance of carbon-carbon composite materials (C–C composites) was studied in a corrosive media of coolant NaF+ZrF4 salt (a model heat-transfer) at 700 °С in the air flow. It has been shown that C–C composite material is resistant to the model heat-transfer even under conditions of critical temperature accident. The main mechanism that leads to the C–C composite corrosion is a mechanism of composite material oxidation due to the contact with the air. The study has evidenced that the C–C composite burn-up rate well correlates with the pyrocarbon matrix content in the composite, the matrix content increase by 2530% results in the composite corrosion resistance increase by a factor of 2–4. So, by developing corrosion-resistant carbon-carbon composites one has a problem of finding an optimum fiber-matrix ratio in the composite. It has been confirmed experimentally that by silication of C–C composites with the use of the methods which were developed in NSC KIPT it is possible to increase the service life of products under simulated accident conditions by a factor of 7–7.5.