Improvement of Carbon Composite Material Refractoriness Due to Limitation of Surface Oxidation
| Autor: | M. Yu. Bamborin, D. S. Maksimova, A. R. Gareev, E. G. Cheblakova, S. A. Kolesnikov |
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| Rok vydání: | 2016 |
| Předmět: |
Surface (mathematics)
Arrhenius equation Materials science Carbon nanofiber 020209 energy chemistry.chemical_element 02 engineering and technology Combustion symbols.namesake Amorphous carbon chemistry 0202 electrical engineering electronic engineering information engineering Materials Chemistry Ceramics and Composites symbols Carbide-derived carbon Carbon nanotube supported catalyst Composite material Carbon |
| Zdroj: | Refractories and Industrial Ceramics. 57:170-179 |
| ISSN: | 1573-9139 1083-4877 |
| DOI: | 10.1007/s11148-016-9949-y |
| Popis: | Ways of improving the refractoriness of carbon-carbon composite materials due to increasing their density and reducing oxidation rate, and in turn due to reducing the combustion surface, are studied. Oxidation heterogeneous reaction surface in an Arrhenius equation expression is considered as the sum of object outer surface and the reaction surface within pores. It is shown that with an apparent density of 1.93 g/cm3 or more surface oxidation at normal pressure and ~500 °C almost corresponds to the nominal object surface. Processing measures are suggested for improving carbon material refractoriness due to an increase in density and changing surface structure by special high-temperature treatment regimes. |
| Databáze: | OpenAIRE |
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