Ultralight and mechanically robust SiC foams with interconnected cellular architecture
| Autor: | Yuju Lu, Jinlong Yang, Yedong Rong, Yong Huang, Yi Zhao, Jingjing Liu, Lu Wang, Xiaoqing Xi, Bo Ren |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Boehmite Materials science Cellular architecture Process Chemistry and Technology Mullite 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Compressive strength chemistry law Phase (matter) 0103 physical sciences Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology Porosity Filtration Polyurethane |
| Zdroj: | Ceramics International. 46:17962-17968 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.04.108 |
| Popis: | Engineering highly porous SiC foams with interconnected cellular architecture and satisfactory compressive strength for the practical applications remains a challenging task. In the current work, SiC foams bonded by in-situ formed mullite phase were fabricated via polyurethane foaming using boehmite sol-coated SiC powder as the raw material. The strategy in the current work endowed the resultant products with ultrahigh porosity, interconnected pore structure, and a robust mullite bonding phase among the SiC particles. The resulting products with this cellular architecture possessed a high porosity level of 88.5% and maintained a robust compressive strength of 2.56 MPa. Our results showed that as-prepared products are promising for practical applications in the filtration, adsorption and catalytic areas. |
| Databáze: | OpenAIRE |
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