Abstract
The infrared spectral properties of ZrB2-SiC ceramic matrix composited with different microstructure were calculated based on the finite difference time domain (FDTD) method. The influences of SiC particle shape, volume fraction and material thickness on the infrared emissivity of the composites were discussed, and influences of SiC particle shape, volume fraction on the infrared stealth performance of the materials were also evaluated. The results show that the total emissivity of the composites doped with SiC particles is higher than that of bulk ZrB2. The emissivity of the composites doped with whisker SiC particles is lower than doping with sphere and ellipse particles. The emissivity of the composites varies sharply with the increase of SiC volume fraction in the 10∼14 µm wavelength band. The spectral emissivity of the composite is mainly affected by the microstructure of the material near the surface. The largest influences of the above three parameters on the mean emissivity in the atmospheric window are 2.65%, 16.1% respectively. The results will be useful for realizing the regulation of the spectral radiative characteristics of ZrB2-SiC ceramic matrix composites and improving the infrared stealth performance.
| Translated title of the contribution | Numerical Study on the Infrared Radiative Properties of ZrB2-SiC Ceramic Matrix Composites at Room Temperature |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 596-602 |
| Number of pages | 7 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 46 |
| Issue number | 2 |
| State | Published - Feb 2025 |