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Erosion protective coatings for low density, highly porous carbon/carbon composites |
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| Authors: | F Smeacetto M Salvo V Casalegno T Moskalewicz RD Rawlings |
| Affiliation: | a Materials Science and Chemical Engineering Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy b Department of Physics, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy c Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, PL-30-059 Kraków, Al. Mickiewicza 30, Poland d Calcarb Ltd., Eurocentral, Holytown ML1 4XL, UK e Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK |
| Abstract: | A simple and low cost method based on slurry coating was used to produce silicon carbide, titanium carbide and glass-ceramic coatings on low density carbon/carbon composites in order to improve their erosion resistance. Microstructural analyses were performed for substrate and coatings by optical microscopy, and scanning and transmission electron microscopy. As-received and coated composites were submitted to erosion tests using a sandblasting machine according to ASTM G76-95. The best results were obtained with a silica-alumina-yttria based glass-ceramic coating. |
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