摘要
The total hemisphere emissivity (εH) at 90°C and the normal spectral reflectance at room temperature of 3D C/SiC composites were measured with the steady-state calorimeter method and FTIR, respectively. The effects of the surface morphology, thickness of SiC coating and high temperature oxidation on the thermal radiation properties of 3D C/SiC were investigated. The results show that 3D C/SiC composites have excellent thermal radiation properties and the total hemisphere emissivity attains 0.83. With increasing the SiC coating thickness, the total hemisphere emissivity of 3D C/SiC composites decreases first and increases then. After oxidation, the thermal radiation properties of 3D C/SiC with three character surface remarkably increase.
源语言 | 英语 |
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页(从-至) | 79-84 |
页数 | 6 |
期刊 | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
卷 | 25 |
期 | 5 |
出版状态 | 已出版 - 10月 2008 |