Low thermal conductivity of porous Al2O3 foams for SOFC insulation
| Autor: | Y.W. Lo, W.C.J. Wei, Chun-Hway Hsueh |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
business.industry Scanning electron microscope Condensed Matter Physics Microstructure Thermal conductivity Thermal insulation visual_art visual_art.visual_art_medium General Materials Science Ceramic Composite material Fourier transform infrared spectroscopy Porosity Thermal analysis business |
| Zdroj: | Materials Chemistry and Physics. 129:326-330 |
| ISSN: | 0254-0584 |
| Popis: | Ceramic thermal insulator is one of the important thermal management devices for SOFC operating at medium temperatures ( 2 O 3 foams with total porosity of 85–95%. The measurement of thermal conductivity by a hot-wire method was conducted. The effects of cell structure on thermal conductivity were investigated with scanning electron microscopy (SEM) and Fourier transformed infrared spectroscopy (FTIR). By optimizing the cell structures of Al 2 O 3 foams, low thermal conductivities of 0.05 W m −1 K −1 at room temperature and 0.14 W m −1 K −1 at 800 °C were achieved in this study. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect