Effects of SiC interfacial coating on mechanical properties of carbon fiber needled felt reinforced sol-derived Al2O3 composites
| Autor: | Xing-yu Gu, Kuan-hong Zeng, Qing-song Ma |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Thermal shock
Materials science Metals and Alloys engineering.material Geotechnical Engineering and Engineering Geology Condensed Matter Physics Fracture toughness stomatognathic system Coating visual_art Materials Chemistry Fracture (geology) engineering visual_art.visual_art_medium Ceramic Composite material Oxidation resistance |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:463-471 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(20)65226-8 |
| Popis: | 3D carbon fiber needled felt and polycarbosilane-derived SiC coating were selected as reinforcement and interfacial coating, respectively, and the sol−impregnation−drying−heating (SIDH) route was used to fabricate C/Al2O3 composites. The effects of SiC interfacial coating on the mechanical properties, oxidation resistance and thermal shock resistance of C/Al2O3 composites were investigated. It is found that the fracture toughness of C/Al2O3 composites was remarkably superior to that of monolithic Al2O3 ceramics. The introduction of SiC interfacial coating obviously improved the strengths of C/Al2O3 composites although the fracture work diminished to some extent. Owing to the tight bonding between SiC coating and carbon fiber, the C/SiC/Al2O3 composites showed much better oxidation and thermal shock resistance over C/Al2O3 composites under static air. |
| Databáze: | OpenAIRE |
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