High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers
The SiC-BN/SiOC ceramic matrix composites are prepared through the precursor infiltration pyrolysis（PIP） process， using wave-absorbing SiC fibers with in-situ BN coatings as reinforcements and SiOC ceramic as the matrix. After 7 PIP preparation cycles， the composite achieves densification with densi...
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| Format: | Article |
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Journal of Materials Engineering
2025-01-01
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| Series: | Cailiao gongcheng |
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| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000140 |
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| author | SHI Qiaoying LI Jingdan GAN Nianyu LI Siwei |
| author_facet | SHI Qiaoying LI Jingdan GAN Nianyu LI Siwei |
| author_sort | SHI Qiaoying |
| collection | DOAJ |
| description | The SiC-BN/SiOC ceramic matrix composites are prepared through the precursor infiltration pyrolysis（PIP） process， using wave-absorbing SiC fibers with in-situ BN coatings as reinforcements and SiOC ceramic as the matrix. After 7 PIP preparation cycles， the composite achieves densification with density of 2.05 g/cm³ and porosity of 4.28%. The dielectric constants are tested with vector network analyzer. Using transmission line theory， the microwave-absorbing properties of the composites from room temperature to 800 ℃ at 8.2-18 GHz are optimized. The results show that the dielectric constants of the SiC-BN/SiOC composites exhibits significant frequency dispersion effects， leading to broadband microwave-absorbing properties. When the thickness of the composites is 2.1 mm， the maximum bandwidth of the reflection loss better than -10 dB in the X band and the Ku band is 5.7 GHz. As the ambient temperature increases， the real and imaginary parts of the complex permittivity of the composites both increase. For reflection loss better than -5 dB in a wide bandwidth， the optimum thicknesses decrease from 2.3 mm （200 ℃） to 1.1 mm （800 ℃）. |
| format | Article |
| id | doaj-art-c2e98225c37c4fafbe54d2a359dd2aa0 |
| institution | Kabale University |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-c2e98225c37c4fafbe54d2a359dd2aa02025-01-21T09:44:41ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812025-01-01531819010.11868/j.issn.1001-4381.2024.0001401001-4381（2025）01-0081-10High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibersSHI Qiaoying0LI Jingdan1GAN Nianyu2LI Siwei3Fujian Key Laboratory of Advanced Materials，College of Materials，Xiamen University，Xiamen 361005，Fujian，ChinaFujian Key Laboratory of Advanced Materials，College of Materials，Xiamen University，Xiamen 361005，Fujian，ChinaFujian Key Laboratory of Advanced Materials，College of Materials，Xiamen University，Xiamen 361005，Fujian，ChinaFujian Key Laboratory of Advanced Materials，College of Materials，Xiamen University，Xiamen 361005，Fujian，ChinaThe SiC-BN/SiOC ceramic matrix composites are prepared through the precursor infiltration pyrolysis（PIP） process， using wave-absorbing SiC fibers with in-situ BN coatings as reinforcements and SiOC ceramic as the matrix. After 7 PIP preparation cycles， the composite achieves densification with density of 2.05 g/cm³ and porosity of 4.28%. The dielectric constants are tested with vector network analyzer. Using transmission line theory， the microwave-absorbing properties of the composites from room temperature to 800 ℃ at 8.2-18 GHz are optimized. The results show that the dielectric constants of the SiC-BN/SiOC composites exhibits significant frequency dispersion effects， leading to broadband microwave-absorbing properties. When the thickness of the composites is 2.1 mm， the maximum bandwidth of the reflection loss better than -10 dB in the X band and the Ku band is 5.7 GHz. As the ambient temperature increases， the real and imaginary parts of the complex permittivity of the composites both increase. For reflection loss better than -5 dB in a wide bandwidth， the optimum thicknesses decrease from 2.3 mm （200 ℃） to 1.1 mm （800 ℃）.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000140sic fibersioc ceramiccompositedielectric constantmicrowave absorption |
| spellingShingle | SHI Qiaoying LI Jingdan GAN Nianyu LI Siwei High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers Cailiao gongcheng sic fiber sioc ceramic composite dielectric constant microwave absorption |
| title | High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers |
| title_full | High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers |
| title_fullStr | High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers |
| title_full_unstemmed | High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers |
| title_short | High temperature absorption properties of SiOC ceramic matrix composite reinforced by continuous microwave- absorbing SiC fibers |
| title_sort | high temperature absorption properties of sioc ceramic matrix composite reinforced by continuous microwave absorbing sic fibers |
| topic | sic fiber sioc ceramic composite dielectric constant microwave absorption |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000140 |
| work_keys_str_mv | AT shiqiaoying hightemperatureabsorptionpropertiesofsiocceramicmatrixcompositereinforcedbycontinuousmicrowaveabsorbingsicfibers AT lijingdan hightemperatureabsorptionpropertiesofsiocceramicmatrixcompositereinforcedbycontinuousmicrowaveabsorbingsicfibers AT gannianyu hightemperatureabsorptionpropertiesofsiocceramicmatrixcompositereinforcedbycontinuousmicrowaveabsorbingsicfibers AT lisiwei hightemperatureabsorptionpropertiesofsiocceramicmatrixcompositereinforcedbycontinuousmicrowaveabsorbingsicfibers |