Design of three-layered struts in SiC reticulated porous ceramics for porous burner
| Autor: | Qinghu Wang, Ben-Wen Li, Xu Xuecheng, Yuanyuan Chen, Christos G. Aneziris, Yawei Li, Xiong Liang, Zhu He |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Thermal shock Materials science Process Chemistry and Technology Sintering Mullite 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Adiabatic flame temperature Coating 0103 physical sciences Materials Chemistry Ceramics and Composites engineering Composite material 0210 nano-technology Porous medium Porosity Layer (electronics) |
| Zdroj: | Ceramics International. 45:8571-8576 |
| ISSN: | 0272-8842 |
| Popis: | The three-layered struts within SiC reticulated porous ceramics (RPC) were designed to improve the thermal characteristics and thermal shock resistance of porous burner. The effects of strut structure and its composition on the flame stability limits, flame temperature and thermal damage resistance of porous burner were investigated. The results showed that three-layered struts consisted of continuous mullite coating, middle layer of SiC skeleton and inner layer of reaction-bonded mullite after sintering at 1450 °C. Compared to porous media with single layer, RPC with three-layered struts possessed the combined effects of high thermal conductivity and heat radiation because of its middle layer of SiC skeleton and in-situ formed mullite coating. The three-layered struts in porous media extended the flame stability limits and increased the flame temperature of porous burner. Furthermore, the formation of three-layered struts eliminated strut defects and formed continuous mullite coating, thereby significantly improving the oxidation resistance and thermal shock resistance of RPC, which increased the service life of porous burner. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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