ENHANCEMENT OF OXIDATION RESISTANCE OF GRAPHITE FOAMS BY SiC COATING FOR CONCENTRATED SOLAR POWER APPLICATIONS
Graphite foam was coated with SiC by infiltrating the foam with SiO vapour at 1450 C. Specimens with uniform coatings of SiC 0.11, 0.23 and 0.73 g/cm3 were prepared and characterised by SEM/EDS and XRD. The oxidation resistance, determined as weight loss, was measured in static and flowing argon at...
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| Published in | Ceramic Engineering and Science Proceedings pp. 163 - 175 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
01.01.2015
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| Subjects | |
| Online Access | Get full text |
| ISBN | 1119031184 9781119031185 |
| ISSN | 0196-6219 |
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| Abstract | Graphite foam was coated with SiC by infiltrating the foam with SiO vapour at 1450 C. Specimens with uniform coatings of SiC 0.11, 0.23 and 0.73 g/cm3 were prepared and characterised by SEM/EDS and XRD. The oxidation resistance, determined as weight loss, was measured in static and flowing argon at temperatures up to 900 C, to simulate the environment experienced by graphite foam in concentrated solar power plant. The static measurements were made at argon pressures of 0.2 mTorr or 20 mTorr. The coating significantly improved the oxidation resistance. The weight loss rates decreased with increasing exposure time and were stabilised in the flowing argon atmosphere. This showed some oxidation was occurring, attributed to leakage of air into the system. |
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| AbstractList | Graphite foam was coated with SiC by infiltrating the foam with SiO vapour at 1450 C. Specimens with uniform coatings of SiC 0.11, 0.23 and 0.73 g/cm3 were prepared and characterised by SEM/EDS and XRD. The oxidation resistance, determined as weight loss, was measured in static and flowing argon at temperatures up to 900 C, to simulate the environment experienced by graphite foam in concentrated solar power plant. The static measurements were made at argon pressures of 0.2 mTorr or 20 mTorr. The coating significantly improved the oxidation resistance. The weight loss rates decreased with increasing exposure time and were stabilised in the flowing argon atmosphere. This showed some oxidation was occurring, attributed to leakage of air into the system. |
| Author | Singh, M Kim, T Singh, D |
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| Snippet | Graphite foam was coated with SiC by infiltrating the foam with SiO vapour at 1450 C. Specimens with uniform coatings of SiC 0.11, 0.23 and 0.73 g/cm3 were... |
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| StartPage | 163 |
| SubjectTerms | Argon Ceramics Coating Electric power generation Foams Graphite Oxidation resistance Silicon carbide Weight loss |
| Title | ENHANCEMENT OF OXIDATION RESISTANCE OF GRAPHITE FOAMS BY SiC COATING FOR CONCENTRATED SOLAR POWER APPLICATIONS |
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